Strategies for eye positioning after laser-related loss of central vision

J. H. Bertera

doi:10.1117/12.275247

2 May 1997 Strategies for eye positioning after laser-related loss of central vision

J. H. Bertera

Proceedings Volume 2974, Laser and Noncoherent Ocular Effects: Epidemiology, Prevention, and Treatment; (1997) https://doi.org/10.1117/12.275247
Event: BiOS '97, Part of Photonics West, 1997, San Jose, CA, United States

Abstract

Loss of foveal vision from exposure to laser light or retinal disease can seriously impair visual functions like reading and visual search. Central scotomas produce large losses in visually guided performance because central vision has the best visual resolution, compared to more peripheral retina, and is also important in the normal reflexive patten of eye movement. Relatively small central field scotomas can produce significant impairments in visual search if tasks require a high degree of foveal vision such as seeing fine detail or discriminating similar contours or letters. Subjects faced with the task of adapting to the loss of ventral vision sometimes position their eyes in ways which are either asymmetrical, not optimum, or seem to generate abnormal eye movements, even after extensive practice. Discussion includes oculomotor drift, error fixations, hyper-eccentric fixations and remedial eye positioning strategies.

Citation Download Citation

J. H. Bertera "Strategies for eye positioning after laser-related loss of central vision", Proc. SPIE 2974, Laser and Noncoherent Ocular Effects: Epidemiology, Prevention, and Treatment, (2 May 1997); https://doi.org/10.1117/12.275247

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