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Harold E Bedell

TitleProfessor Emeritus
InstitutionUniversity of Houston
DepartmentDean, Optometry
Address4800 Calhoun Rd
Houston TX 77004
Phone713-743-1930
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    Collapse Research 
    Collapse research activities and funding
    R01EY005068     (BEDELL, HAROLD E)Jul 1, 1984 - Sep 30, 2006
    NIH/NEI
    Preceptual Stability and Nystagmus
    Role: Principal Investigator
    S15EY010354     (BEDELL, HAROLD E)Jul 2, 1993 - Jul 1, 1994
    NIH/NEI
    SMALL INSTRUMENTATION GRANT
    Role: Principal Investigator

    Collapse Bibliographic 
    Collapse selected publications
    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Faculty can login to make corrections and additions.
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    1. Fu H, Zhang B, Tong J, Bedell H, Zhang H, Yang Y, Nie C, Luo Y, Liu X. Relationships of orientation discrimination threshold and visual acuity with macular lesions in age-related macular degeneration. PLoS One. 2017; 12(9):e0185070. PMID: 28922378.
      View in: PubMed
    2. Huynh D, Tripathy SP, Bedell HE, Ögmen H. The reference frame for encoding and retention of motion depends on stimulus set size. Atten Percept Psychophys. 2017 Apr; 79(3):888-910. PMID: 28092077.
      View in: PubMed
    3. Pratt JD, Stevenson SB, Bedell HE. Scotoma Visibility and Reading Rate with Bilateral Central Scotomas. Optom Vis Sci. 2017 Mar; 94(3):279-289. PMID: 28030516.
      View in: PubMed
    4. Gautier J, Bedell HE, Siderov J, Waugh SJ. Monocular microsaccades are visual-task related. J Vis. 2016; 16(3):37. PMID: 26913629.
      View in: PubMed
    5. Bedell HE, Pratt JD, Krishnan A, Kisilevsky E, Brin TA, González EG, Steinbach MJ, Tarita-Nistor L. Repeatability of Nidek MP-1 Fixation Measurements in Patients With Bilateral Central Field Loss. Invest Ophthalmol Vis Sci. 2015 Apr; 56(4):2624-30. PMID: 25788656.
      View in: PubMed
    6. Bedell HE, Siderov J, Formankiewicz MA, Waugh SJ, Aydin S. Evidence for an eye-movement contribution to normal foveal crowding. Optom Vis Sci. 2015 Feb; 92(2):237-45. PMID: 25951481.
      View in: PubMed
    7. Huynh DL, Tripathy SP, Bedell HE, Ögmen H. Stream specificity and asymmetries in feature binding and content-addressable access in visual encoding and memory. J Vis. 2015; 15(13):14. PMID: 26382005.
      View in: PubMed
    8. Tripathy SP, Cavanagh P, Bedell HE. Large crowding zones in peripheral vision for briefly presented stimuli. J Vis. 2014 Dec 30; 14(6):11. PMID: 25550071.
      View in: PubMed
    9. Liu L, Wang YZ, Bedell HE. Visual-function tests for self-monitoring of age-related macular degeneration. Optom Vis Sci. 2014 Aug; 91(8):956-65. PMID: 24987816.
      View in: PubMed
    10. Pratt JD, Ohara JM, Woo SY, Bedell HE. Fixation locus in patients with bilateral central scotomas for targets that perceptually fill in. Optom Vis Sci. 2014 Mar; 91(3):312-21. PMID: 24413271; PMCID: PMC4535931.
      View in: PubMed, PubMed Central
    11. Ögmen H, Ekiz O, Huynh D, Bedell HE, Tripathy SP. Bottlenecks of motion processing during a visual glance: the leaky flask model. PLoS One. 2013; 8(12):e83671. PMID: 24391806; PMCID: PMC3877086.
      View in: PubMed, PubMed Central
    12. Shi Y, Applegate RA, Wei X, Ravikumar A, Bedell HE. Registration tolerance of a custom correction to maintain visual acuity. Optom Vis Sci. 2013 Dec; 90(12):1370-84. PMID: 24270593.
      View in: PubMed
    13. Ravikumar A, Marsack JD, Bedell HE, Shi Y, Applegate RA. Change in visual acuity is well correlated with change in image-quality metrics for both normal and keratoconic wavefront errors. J Vis. 2013 Nov 26; 13(13):28. PMID: 24281244; PMCID: PMC3842080.
      View in: PubMed, PubMed Central
    14. Bedell HE, Siderov J, Waugh SJ, Zemanová R, Pluhácek F, Musilová L. Contour interaction for foveal acuity targets at different luminances. Vision Res. 2013 Aug 30; 89:90-5. PMID: 23880125.
      View in: PubMed
    15. Shi Y, Queener HM, Marsack JD, Ravikumar A, Bedell HE, Applegate RA. Optimizing wavefront-guided corrections for highly aberrated eyes in the presence of registration uncertainty. J Vis. 2013 Jun 11; 13(7). PMID: 23757512; PMCID: PMC3680305.
      View in: PubMed, PubMed Central
    16. Moulder MJ, Qian J, Bedell HE. Motion deblurring during pursuit tracking improves spatial-interval acuity. Vision Res. 2013 Apr 05; 81:6-11. PMID: 23402872; PMCID: PMC3637418.
      View in: PubMed, PubMed Central
    17. Bedell HE, Stevenson SB. Eye movement testing in clinical examination. Vision Res. 2013 Sep 20; 90:32-7. PMID: 23416869.
      View in: PubMed
    18. Sridhar D, Bedell HE. Changes in perceived egocentric direction during symmetric vergence. Perception. 2013; 42(2):127-37. PMID: 23700952.
      View in: PubMed
    19. Bedell HE, Gantz L, Jackson DN. Perceived suprathreshold depth under conditions that elevate the stereothreshold. Optom Vis Sci. 2012 Dec; 89(12):1768-73. PMID: 23160439; PMCID: PMC3509254.
      View in: PubMed, PubMed Central
    20. Ukwade MT, Bedell HE. Spatial-bisection acuity in infantile nystagmus. Vision Res. 2012 Jul 01; 64:1-6. PMID: 22595744; PMCID: PMC3396734.
      View in: PubMed, PubMed Central
    21. Sridhar D, Bedell HE. Binocular retinal image differences influence eye-position signals for perceived visual direction. Vision Res. 2012 Jun 01; 62:220-7. PMID: 22560955; PMCID: PMC3374399.
      View in: PubMed, PubMed Central
    22. Jackson DN, Bedell HE. Vertical heterophoria and susceptibility to visually induced motion sickness. Strabismus. 2012 Mar; 20(1):17-23. PMID: 22390327; PMCID: PMC3625960.
      View in: PubMed, PubMed Central
    23. Qian J, Adeseye SA, Stevenson SB, Patel SS, Bedell HE. D(max) for stereoscopic depth perception with simulated monovision correction. Seeing Perceiving. 2012; 25(5):399-408. PMID: 21774871.
      View in: PubMed
    24. Gantz L, Bedell HE. Variation of stereothreshold with random-dot stereogram density. Optom Vis Sci. 2011 Sep; 88(9):1066-71. PMID: 21642889; PMCID: PMC3163004.
      View in: PubMed, PubMed Central
    25. Ravikumar A, Applegate RA, Shi Y, Bedell HE. Six just-noticeable differences in retinal image quality in 1 line of visual acuity: toward quantification of happy versus unhappy patients with 20/20 acuity. J Cataract Refract Surg. 2011 Aug; 37(8):1523-9. PMID: 21782097; PMCID: PMC3587308.
      View in: PubMed, PubMed Central
    26. Sridhar D, Bedell HE. Relative contributions of the two eyes to perceived egocentric visual direction in normal binocular vision. Vision Res. 2011 May 11; 51(9):1075-85. PMID: 21371491; PMCID: PMC3092072.
      View in: PubMed, PubMed Central
    27. Chung ST, LaFrance MW, Bedell HE. Influence of motion smear on visual acuity in simulated infantile nystagmus. Optom Vis Sci. 2011 Feb; 88(2):200-7. PMID: 21200353; PMCID: PMC3032354.
      View in: PubMed, PubMed Central
    28. Bedell HE, Tong J, Aydin M. The perception of motion smear during eye and head movements. Vision Res. 2010 Dec; 50(24):2692-701. PMID: 20875444; PMCID: PMC2991377.
      View in: PubMed, PubMed Central
    29. Gantz L, Bedell HE. Transfer of perceptual learning of depth discrimination between local and global stereograms. Vision Res. 2010 Aug 23; 50(18):1891-9. PMID: 20600234; PMCID: PMC2922406.
      View in: PubMed, PubMed Central
    30. Shooner C, Tripathy SP, Bedell HE, Ogmen H. High-capacity, transient retention of direction-of-motion information for multiple moving objects. J Vis. 2010 Jun 01; 10(6):8. PMID: 20884557; PMCID: PMC3248821.
      View in: PubMed, PubMed Central
    31. Wang J, Wyatt LM, Felius J, Stager DR, Stager DR, Birch EE, Bedell HE. Onset and progression of with-the-rule astigmatism in children with infantile nystagmus syndrome. Invest Ophthalmol Vis Sci. 2010 Jan; 51(1):594-601. PMID: 20019374; PMCID: PMC2869062.
      View in: PubMed, PubMed Central
    32. Tong J, Ramamurthy M, Patel SS, Vu-Yu LP, Bedell HE. The temporal impulse response function during smooth pursuit. Vision Res. 2009 Nov; 49(23):2835-42. PMID: 19706304; PMCID: PMC2783465.
      View in: PubMed, PubMed Central
    33. Bedell HE, Tong J, Woo SY, House JR, Nguyen T. Orientation discrimination with macular changes associated with early AMD. Optom Vis Sci. 2009 May; 86(5):485-91. PMID: 19319009; PMCID: PMC2837926.
      View in: PubMed, PubMed Central
    34. Patel SS, Bedell HE, Tsang DK, Ukwade MT. Relationship between threshold and suprathreshold perception of position and stereoscopic depth. J Opt Soc Am A Opt Image Sci Vis. 2009 Apr; 26(4):847-61. PMID: 19340259; PMCID: PMC2829985.
      View in: PubMed, PubMed Central
    35. Bedell HE, Tong J. Asymmetrical perception of motion smear in infantile nystagmus. Vision Res. 2009 Jan; 49(2):262-7. PMID: 19010344.
      View in: PubMed
    36. Hariharan-Vilupuru S, Bedell HE. The perceived visual direction of monocular objects in random-dot stereograms is influenced by perceived depth and allelotropia. Vision Res. 2009 Jan; 49(2):190-201. PMID: 18992271.
      View in: PubMed
    37. Tong J, Stevenson SB, Bedell HE. Signals of eye-muscle proprioception modulate perceived motion smear. J Vis. 2008 Oct 23; 8(14):7.1-6. PMID: 19146308.
      View in: PubMed
    38. Tong J, Lien TC, Cisarik PM, Bedell HE. Motion sensitivity during fixation in straight-ahead and lateral eccentric gaze. Exp Brain Res. 2008 Sep; 190(2):189-200. PMID: 18584163.
      View in: PubMed
    39. Bedell HE, Ramamurthy M, Patel SS, Subramaniam S, Vu-Yu LP, Tong J. The temporal impulse response function in infantile nystagmus. Vision Res. 2008 Jul; 48(15):1575-83. PMID: 18550143; PMCID: PMC2532591.
      View in: PubMed, PubMed Central
    40. Tong J, Aydin M, Bedell HE. Direction and extent of perceived motion smear during pursuit eye movement. Vision Res. 2007 Mar; 47(7):1011-9. PMID: 17239420.
      View in: PubMed
    41. Ukwade MT, Harwerth RS, Bedell HE. Stereoscopic acuity, observation distance and fixation disparity: a commentary on 'Stereoscopic acuity and observation distance' by Bradshaw and Glennerster (2006). Spat Vis. 2007; 20(5):489-92. PMID: 17716529.
      View in: PubMed
    42. Tong J, Aydin M, Bedell HE. Direction-of-motion discrimination is facilitated by visible motion smear. Percept Psychophys. 2007 Jan; 69(1):48-55. PMID: 17515215.
      View in: PubMed
    43. Chung ST, Patel SS, Bedell HE, Yilmaz O. Spatial and temporal properties of the illusory motion-induced position shift for drifting stimuli. Vision Res. 2007 Jan; 47(2):231-43. PMID: 17190608; PMCID: PMC2734886.
      View in: PubMed, PubMed Central
    44. Tong J, Patel SS, Bedell HE. The attenuation of perceived motion smear during combined eye and head movements. Vision Res. 2006 Dec; 46(26):4387-97. PMID: 17046046; PMCID: PMC1752240.
      View in: PubMed, PubMed Central
    45. Hanson KS, Bedell HE, White JM, Ukwade MT. Distance and near visual acuity in infantile nystagmus. Optom Vis Sci. 2006 Nov; 83(11):823-9. PMID: 17106409.
      View in: PubMed
    46. Woo S, Bedell HE. Beating the beat: reading can be faster than the frequency of eye movements in persons with congenital nystagmus. Optom Vis Sci. 2006 Aug; 83(8):559-71. PMID: 16909075.
      View in: PubMed
    47. Bedell HE. Visual and perceptual consequences of congenital nystagmus. Semin Ophthalmol. 2006 Apr-Jun; 21(2):91-5. PMID: 16702076.
      View in: PubMed
    48. Wang M, Bedell HE. Asymmetrical vertical phorias in normal subjects: the influence of unbalanced illumination. Strabismus. 2005 Sep; 13(3):123-8. PMID: 16251141.
      View in: PubMed
    49. Patel SS, Bedell HE, Sampat P. Pooling signals from vertically and non-vertically orientation-tuned disparity mechanisms in human stereopsis. Vision Res. 2006 Jan; 46(1-2):1-13. PMID: 16129469.
      View in: PubMed
    50. Bedell HE, Patel SS. Attenuation of perceived motion smear during the vestibulo-ocular reflex. Vision Res. 2005 Jul; 45(16):2191-200. PMID: 15845249.
      View in: PubMed
    51. Tong J, Patel SS, Bedell HE. Asymmetry of perceived motion smear during head and eye movements: evidence for a dichotomous neural categorization of retinal image motion. Vision Res. 2005 Jun; 45(12):1519-24. PMID: 15781070.
      View in: PubMed
    52. Ramamurthy M, Bedell HE, Patel SS. Stereothresholds for moving line stimuli for a range of velocities. Vision Res. 2005 Mar; 45(6):789-99. PMID: 15639505.
      View in: PubMed
    53. Bedell HE, Chung ST, Patel SS. Attenuation of perceived motion smear during vergence and pursuit tracking. Vision Res. 2004 Apr; 44(9):895-902. PMID: 14992833; PMCID: PMC2729068.
      View in: PubMed, PubMed Central
    54. Ogmen H, Patel SS, Bedell HE, Camuz K. Differential latencies and the dynamics of the position computation process for moving targets, assessed with the flash-lag effect. Vision Res. 2004; 44(18):2109-28. PMID: 15183678.
      View in: PubMed
    55. Purushothaman G, Ogmen H, Bedell HE. Suprathreshold intrinsic dynamics of the human visual system. Neural Comput. 2003 Dec; 15(12):2883-908. PMID: 14629872.
      View in: PubMed
    56. Patel SS, Ukwade MT, Stevenson SB, Bedell HE, Sampath V, Ogmen H. Stereoscopic depth perception from oblique phase disparities. Vision Res. 2003 Nov; 43(24):2479-92. PMID: 13129536.
      View in: PubMed
    57. Bedell HE, Chung ST, Ogmen H, Patel SS. Color and motion: which is the tortoise and which is the hare? Vision Res. 2003 Oct; 43(23):2403-12. PMID: 12972391.
      View in: PubMed
    58. Patel SS, Ukwade MT, Bedell HE, Sampath V. Near stereothresholds measured with random-dot stereograms using phase disparities. Optometry. 2003 Jul; 74(7):453-62. PMID: 12877278.
      View in: PubMed
    59. Chung ST, Bedell HE. Velocity dependence of Vernier and letter acuity for band-pass filtered moving stimuli. Vision Res. 2003 Mar; 43(6):669-82. PMID: 12604103.
      View in: PubMed
    60. Ukwade MT, Bedell HE, Harwerth RS. Stereopsis is perturbed by vergence error. Vision Res. 2003 Jan; 43(2):181-93. PMID: 12536140.
      View in: PubMed
    61. Ukwade MT, Bedell HE, Harwerth RS. Stereothresholds with simulated vergence variability and constant error. Vision Res. 2003 Jan; 43(2):195-204. PMID: 12536141.
      View in: PubMed
    62. Ukwade MT, Bedell HE, White JM. Orientation discrimination and variability of torsional eye position in congenital nystagmus. Vision Res. 2002 Sep; 42(20):2395-407. PMID: 12350426.
      View in: PubMed
    63. Sampath V, Bedell HE. Distribution of refractive errors in albinos and persons with idiopathic congenital nystagmus. Optom Vis Sci. 2002 May; 79(5):292-9. PMID: 12035986.
      View in: PubMed
    64. Purushothaman G, Lacassagne D, Bedell HE, Ogmen H. Effect of exposure duration, contrast and base blur on coding and discrimination of edges. Spat Vis. 2002; 15(3):341-76. PMID: 12116994.
      View in: PubMed
    65. Bedell HE, Yang J. The attenuation of perceived image smear during saccades. Vision Res. 2001 Feb; 41(4):521-8. PMID: 11166054.
      View in: PubMed
    66. Patel SS, Ogmen H, Bedell HE, Sampath V. Flash-lag effect: differential latency, not postdiction. Science. 2000 Nov 10; 290(5494):1051. PMID: 11184992.
      View in: PubMed
    67. Bedell HE. Perception of a clear and stable visual world with congenital nystagmus. Optom Vis Sci. 2000 Nov; 77(11):573-81. PMID: 11138830.
      View in: PubMed
    68. Akutsu H, Bedell HE, Patel SS. Recognition thresholds for letters with simulated dioptric blur. Optom Vis Sci. 2000 Oct; 77(10):524-30. PMID: 11100890.
      View in: PubMed
    69. Purushothaman G, Ogmen H, Bedell HE. Gamma-range oscillations in backward-masking functions and their putative neural correlates. Psychol Rev. 2000 Jul; 107(3):556-77. PMID: 10941280.
      View in: PubMed
    70. Aitsebaomo AP, Bedell HE. Saccadic and psychophysical discrimination of double targets. Optom Vis Sci. 2000 Jun; 77(6):321-30. PMID: 10879789.
      View in: PubMed
    71. Bedell HE, Chung ST, Patel SS. Elevation of Vernier thresholds during image motion depends on target configuration. J Opt Soc Am A Opt Image Sci Vis. 2000 Jun; 17(6):947-54. PMID: 10850464.
      View in: PubMed
    72. Reich LN, Bedell HE. Relative legibility and confusions of letter acuity targets in the peripheral and central retina. Optom Vis Sci. 2000 May; 77(5):270-5. PMID: 10831217.
      View in: PubMed
    73. Beauregard D, Lewis J, Piccolo M, Bedell H. Diagnosis of glaucoma using telemedicine--the effect of compression on the evaluation of optic nerve head cup-disc ratio. J Telemed Telecare. 2000; 6 Suppl 1:S123-5. PMID: 10793995.
      View in: PubMed
    74. Ukwade MT, Bedell HE. Stereothresholds in persons wtih congenital nystagmus and in normal observers during comparable retinal image motion. Vision Res. 1999 Aug; 39(17):2963-73. PMID: 10492822.
      View in: PubMed
    75. Patel SS, Bedell HE, Ukwade MT. Vernier judgments in the absence of regular shape information. Vision Res. 1999 Jul; 39(14):2349-60. PMID: 10367056.
      View in: PubMed
    76. Siderov J, Harwerth RS, Bedell HE. Stereopsis, cyclovergence and the backwards tilt of the vertical horopter. Vision Res. 1999 Apr; 39(7):1347-57. PMID: 10343847.
      View in: PubMed
    77. Bedell HE, Patel S, Chung ST. Comparison of letter and Vernier acuities with dioptric and diffusive blur. Optom Vis Sci. 1999 Feb; 76(2):115-20. PMID: 10082058.
      View in: PubMed
    78. Purushothaman G, Patel SS, Bedell HE, Ogmen H. Moving ahead through differential visual latency. Nature. 1998 Dec 03; 396(6710):424. PMID: 9853748.
      View in: PubMed
    79. Chen Y, Bedell HE, Frishman LJ. The precision of velocity discrimination across spatial frequency. Percept Psychophys. 1998 Nov; 60(8):1329-36. PMID: 9865074.
      View in: PubMed
    80. Gall R, Wick B, Bedell H. Vergence facility and target type. Optom Vis Sci. 1998 Oct; 75(10):727-30. PMID: 9798212.
      View in: PubMed
    81. Gall R, Wick B, Bedell H. Vergence facility: establishing clinical utility. Optom Vis Sci. 1998 Oct; 75(10):731-42. PMID: 9798213.
      View in: PubMed
    82. Purushothaman G, Ogmen H, Chen S, Bedell HE. Motion deblurring in a neural network model of retino-cortical dynamics. Vision Res. 1998 Jun; 38(12):1827-42. PMID: 9797961.
      View in: PubMed
    83. Chung ST, Bedell HE. Vernier and letter acuities for low-pass filtered moving stimuli. Vision Res. 1998 Jun; 38(13):1967-82. PMID: 9797943.
      View in: PubMed
    84. Chen Y, Bedell HE, Frishman LJ, Levi DM. Stimulus uncertainty affects velocity discrimination. Vision Res. 1998 May; 38(9):1265-72. PMID: 9666994.
      View in: PubMed
    85. Chung ST, Bedell HE. Congenital nystagmus image motion: influence on visual acuity at different luminances. Optom Vis Sci. 1997 May; 74(5):266-72. PMID: 9219284.
      View in: PubMed
    86. Chung ST, Levi DM, Bedell HE. Ricco's diameter for line detection increases with stimulus velocity. J Opt Soc Am A Opt Image Sci Vis. 1996 Nov; 13(11):2129-34. PMID: 8888605.
      View in: PubMed
    87. Bedell HE, Lott LA. Suppression of motion-produced smear during smooth pursuit eye movements. Curr Biol. 1996 Aug 01; 6(8):1032-4. PMID: 8805336.
      View in: PubMed
    88. Chung ST, Levi DM, Bedell HE. Vernier in motion: what accounts for the threshold elevation? Vision Res. 1996 Aug; 36(16):2395-410. PMID: 8917803.
      View in: PubMed
    89. Leung V, Wick B, Bedell HE. Multifaceted treatment of congenital nystagmus: a report of 6 cases. Optom Vis Sci. 1996 Feb; 73(2):114-24. PMID: 8927312.
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    90. Chung ST, Bedell HE. Velocity criteria for "foveation periods" determined from image motions simulating congenital nystagmus. Optom Vis Sci. 1996 Feb; 73(2):92-103. PMID: 8927317.
      View in: PubMed
    91. Chen Y, Bedell HE, Frishman LJ. Temporal-contrast discrimination and its neural correlates. Perception. 1996; 25(5):505-22. PMID: 8865294.
      View in: PubMed
    92. Bedell HE, Bollenbacher MA. Perception of motion smear in normal observers and in persons with congenital nystagmus. Invest Ophthalmol Vis Sci. 1996 Jan; 37(1):188-95. PMID: 8550322.
      View in: PubMed
    93. Younes M, Boltz R, Leach NE, Bedell H. Short- and long-term repeatability of Visioptic Alcon EyeMap (Visioptic EH-270) corneal topographer on normal human corneas. Optom Vis Sci. 1995 Nov; 72(11):838-44. PMID: 8587773.
      View in: PubMed
    94. Chung ST, Bedell HE. Effect of retinal image motion on visual acuity and contour interaction in congenital nystagmus. Vision Res. 1995 Nov; 35(21):3071-82. PMID: 8533343.
      View in: PubMed
    95. Chen S, Bedell HE, Ogmen H. A target in real motion appears blurred in the absence of other proximal moving targets. Vision Res. 1995 Aug; 35(16):2315-28. PMID: 7571467.
      View in: PubMed
    96. Bedell HE, Johnson CA. The effect of flicker on foveal and peripheral thresholds for oscillatory motion. Vision Res. 1995 Aug; 35(15):2179-89. PMID: 7667930.
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    97. Wensveen JM, Bedell HE, Loshin DS. Reading rates with artificial central scotomata with and without spatial remapping of print. Optom Vis Sci. 1995 Feb; 72(2):100-14. PMID: 7753524.
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    98. Chung ST, Bedell HE. "Dumping" of rebound nystagmus and optokinetic afternystagmus in humans. Exp Brain Res. 1995; 107(2):306-14. PMID: 8773248.
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    99. Bedell HE, Currie DC. Extraretinal signals for congenital nystagmus. Invest Ophthalmol Vis Sci. 1993 Jun; 34(7):2325-32. PMID: 8505214.
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    100. Ukwade MT, Bedell HE. Stability of oculomotor fixation as a function of target contrast and blur. Optom Vis Sci. 1993 Feb; 70(2):123-6. PMID: 8446375.
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    101. Ukwade MT, Bedell HE. Variation of congenital nystagmus with viewing distance. Optom Vis Sci. 1992 Dec; 69(12):976-85. PMID: 1300523.
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    102. Wick B, Bedell HE. Rapid- and slow-velocity vergence eye movements. Ophthalmic Physiol Opt. 1992 Oct; 12(4):420-4. PMID: 1293528.
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    103. Aitsebaomo AP, Bedell HE. Psychophysical and saccadic information about direction for briefly presented visual targets. Vision Res. 1992 Sep; 32(9):1729-37. PMID: 1455744.
      View in: PubMed
    104. Waugh SJ, Bedell HE. Sensitivity to temporal luminance modulation in congenital nystagmus. Invest Ophthalmol Vis Sci. 1992 Jun; 33(7):2316-24. PMID: 1607243.
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    105. Bedell HE. Sensitivity to oscillatory target motion in congenital nystagmus. Invest Ophthalmol Vis Sci. 1992 Apr; 33(5):1811-21. PMID: 1559781.
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    106. Bedell HE, Loshin DS. Interrelations between measures of visual acuity and parameters of eye movement in congenital nystagmus. Invest Ophthalmol Vis Sci. 1991 Feb; 32(2):416-21. PMID: 1993594.
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    107. Bedell HE. Directionalization of visual targets during involuntary eye movement. Optom Vis Sci. 1990 Aug; 67(8):583-9. PMID: 2216323.
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    108. White JM, Bedell HE. The oculomotor reference in humans with bilateral macular disease. Invest Ophthalmol Vis Sci. 1990 Jun; 31(6):1149-61. PMID: 2354915.
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    109. Bedell HE, Yap YL, Flom MC. Fixational drift and nasal-temporal pursuit asymmetries in strabismic amblyopes. Invest Ophthalmol Vis Sci. 1990 May; 31(5):968-76. PMID: 2335458.
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    110. Wolf KS, Bedell HE, Pedersen SB. Relations between accommodation and vergence in darkness. Optom Vis Sci. 1990 Feb; 67(2):89-93. PMID: 2336261.
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    111. Joubert C, Bedell HE. Proximal vergence and perceived distance. Optom Vis Sci. 1990 Jan; 67(1):29-35. PMID: 2308748.
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    112. Bedell HE, Klopfenstein JF, Yuan NY. Extraretinal information about eye position during involuntary eye movement: optokinetic afternystagmus. Percept Psychophys. 1989 Dec; 46(6):579-86. PMID: 2587187.
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    113. Herse PR, Bedell HE. Contrast sensitivity for letter and grating targets under various stimulus conditions. Optom Vis Sci. 1989 Nov; 66(11):774-81. PMID: 2616138.
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    114. Wick B, Bedell HE. Magnitude and velocity of proximal vergence. Invest Ophthalmol Vis Sci. 1989 Apr; 30(4):755-60. PMID: 2703318.
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    115. Mapp AP, Barbeito R, Bedell HE, Ono H. Visual localization of briefly presented peripheral targets. Biol Cybern. 1989; 60(4):261-5. PMID: 2706280.
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    116. Barbeito R, Bedell HE, Flom MC. Does impaired contrast sensitivity explain the spatial uncertainty of amblyopes? Invest Ophthalmol Vis Sci. 1988 Feb; 29(2):323-6. PMID: 3338890.
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    117. Moidell BG, Bedell HE. Changes in oculocentric visual direction induced by the recalibration of saccades. Vision Res. 1988; 28(2):329-36. PMID: 3414020.
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    118. Abplanalp P, Bedell H. Visual improvement in an albinotic patient with an alteration of congenital nystagmus. Am J Optom Physiol Opt. 1987 Dec; 64(12):944-51. PMID: 3445891.
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    119. Ogboso YU, Bedell HE. Magnitude of lateral chromatic aberration across the retina of the human eye. J Opt Soc Am A. 1987 Aug; 4(8):1666-72. PMID: 3625350.
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    120. Barbeito R, Bedell HE, Flom MC, Simpson TL. Effects of luminance on the visual acuity of strabismic and anisometropic amblyopes and optically blurred normals. Vision Res. 1987; 27(9):1543-9. PMID: 3445488.
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    121. Yap YL, Bedell HE, Abplanalp PL. Blind spot "fixation" in normal eyes: implications for eccentric viewing in bilateral macular disease. Am J Optom Physiol Opt. 1986 Apr; 63(4):259-64. PMID: 3706480.
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    122. Bedell HE. Some constraints on peripheral visual functioning. Introduction. Am J Optom Physiol Opt. 1986 Feb; 63(2):91-3. PMID: 3953763.
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    123. Simpson TL, Barbeito R, Bedell HE. The effect of optical blur on visual acuity for targets of different luminances. Ophthalmic Physiol Opt. 1986; 6(3):279-81. PMID: 3822467.
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    124. Horner DG, Paul AD, Katz B, Bedell HE. Variations in the slope of the psychometric acuity function with acuity threshold and scale. Am J Optom Physiol Opt. 1985 Dec; 62(12):895-900. PMID: 4083332.
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    125. Bedell HE, Johnson MH, Barbeito R. Precision and accuracy of oculocentric direction for targets of different luminances. Percept Psychophys. 1985 Aug; 38(2):135-40. PMID: 4088805.
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    126. Bedell HE, Flom MC, Barbeito R. Spatial aberrations and acuity in strabismus and amblyopia. Invest Ophthalmol Vis Sci. 1985 Jul; 26(7):909-16. PMID: 4008207.
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    127. Bedell HE, Flom MC. Bilateral oculomotor abnormalities in strabismic amblyopes: evidence for a common central mechanism. Doc Ophthalmol. 1985 Jun 30; 59(4):309-21. PMID: 4028921.
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    128. Flom MC, Bedell HE. Identifying amblyopia using associated conditions, acuity, and nonacuity features. Am J Optom Physiol Opt. 1985 Mar; 62(3):153-60. PMID: 3985107.
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    129. Katz LM, Levi DM, Bedell HE. Central and peripheral contrast sensitivity in amblyopia with varying field size. Doc Ophthalmol. 1984 Dec 15; 58(4):351-73. PMID: 6525936.
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    130. Bedell HE, Johnson CA. The perceived size of targets in the peripheral and central visual fields. Ophthalmic Physiol Opt. 1984; 4(2):123-31. PMID: 6728473.
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    131. Bedell HE, Barbeito R, Aitsebaomo PA. The precision of oculocentric direction and its role in the stability of fixation. Vision Res. 1984; 24(10):1157-61. PMID: 6523738.
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    132. Bedell HE, Flom MC. Normal and abnormal space perception. Am J Optom Physiol Opt. 1983 Jun; 60(6):426-35. PMID: 6881273.
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    133. Bedell HE, Katz LM. On the necessity of correcting peripheral target luminance for pupillary area. Am J Optom Physiol Opt. 1982 Oct; 59(10):767-9. PMID: 7148970.
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    134. Enoch JM, Eisner A, Bedell HE. Further evaluation of an apparent failure of the photoreceptor alignment mechanism in a human observer. Arch Ophthalmol. 1982 Aug; 100(8):1280-1. PMID: 7103811.
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    135. Bedell HE. Symmetry of acuity profiles in esotropic amblyopic eyes. Hum Neurobiol. 1982; 1(3):221-4. PMID: 7185794.
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    136. Bedell HE, Enoch JM, Fitzgerald CR. Photoreceptor orientation. A graded disturbance bordering a region of choroidal atrophy. Arch Ophthalmol. 1981 Oct; 99(10):1841-4. PMID: 7295138.
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    137. Genter CR, Kandel GL, Bedell HE. The minimum angle of resolution vs angle of regard function as measured with different targets. Ophthalmic Physiol Opt. 1981; 1(1):3-12. PMID: 7041051.
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    138. Flom MC, Kirschen DG, Bedell HE. Control of unsteady, eccentric fixation in amblyopic eyes by auditory feedback of eye position. Invest Ophthalmol Vis Sci. 1980 Nov; 19(11):1371-81. PMID: 7429772.
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    139. Bedell HE, Enoch JM. An apparent failure of the photoreceptor alignment mechanism in a human observer. Arch Ophthalmol. 1980 Nov; 98(11):2023-6. PMID: 7436838.
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    140. Bedell HE. A functional test of foveal fixation based upon differential cone directional sensitivity. Vision Res. 1980; 20(6):557-60. PMID: 7434592.
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    141. Kandel GL, Grattan PE, Bedell HE. Are the dominant eyes of amblyopes normal? Am J Optom Physiol Opt. 1980 Jan; 57(1):1-6. PMID: 7377273.
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    142. Bedell HE. Central and peripheral retinal photoreceptor orientation in amblyopic eyes as assessed by the psychophysical Stiles-Crawford function. Invest Ophthalmol Vis Sci. 1980 Jan; 19(1):49-59. PMID: 7350134.
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    143. Enoch JM, Bedell HE, Kaufman HE. Interferometric visual acuity testing in anterior segment disease. Arch Ophthalmol. 1979 Oct; 97(10):1916-9. PMID: 384983.
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    144. Enoch JM, Bedell HE. Specification of the directionality of the Stiles-Crawford function. Am J Optom Physiol Opt. 1979 Jun; 56(6):341-4. PMID: 532806.
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    145. Fitzgerald CR, Enoch JM, Campos EC, Bedell HE. Comparison of visual function studies in two cases of senile macular degeneration. Albrecht Von Graefes Arch Klin Exp Ophthalmol. 1979 Apr 02; 210(2):79-91. PMID: 312039.
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    146. Bedell HE, Enoch JM. A study of the Stiles-Crawford (S-C) function at 35 degrees in the temporal field and the stability of the foveal S-C function peak over time. J Opt Soc Am. 1979 Mar; 69(3):435-42. PMID: 458510.
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    147. Enoch JM, Campos EC, Bedell HE. Visual resolution in a patient exhibiting a visual fatigue or saturation-like effect: probable multiple sclerosis. Arch Ophthalmol. 1979 Jan; 97(1):76-8. PMID: 758895.
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    148. Campos EC, Bedell HE, Enoch JM, Fitzgerald CR. Retinal receptive field-like properties and Stiles-Crawford effect in a patient with a traumatic choroidal rupture. Doc Ophthalmol. 1978 Aug 01; 45(2):381-95. PMID: 688854.
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    149. Campos EC, Bedell HE. Critical flicker-fusion frequency as an indicator of human receptive field-like properties. Invest Ophthalmol Vis Sci. 1978 Jun; 17(6):533-8. PMID: 659074.
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    150. Enoch JM, Bedell HE, Campos EC. Local variations in rod receptor orientation. Vision Res. 1978; 18(1):123-4. PMID: 664271.
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    151. Kandel GL, Grattan PE, Bedell HE. Monocular fixation and acuity in amblyopic and normal eyes. Am J Optom Physiol Opt. 1977 Sep; 54(9):598-608. PMID: 596410.
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    152. Bedell HE, Kandel GL. Experimentally induced variations in the dark adaptation functions of a severe strabismic amblyope. Doc Ophthalmol. 1976 Apr 28; 41(1):129-56. PMID: 1269368.
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    153. Kandel GL, Bedell HE. Eccentricity of the scotopic fovea about a photopic point as revealed by acuity contours. Vision Res. 1976; 16(4):357-62. PMID: 941411.
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