Foveal photoreceptor explanation of short-term visual acuity recovery associated with laser-induced foveal damage

Amir Langus; Harry Zwick; Bruce E. Stuck; Michael Belkin M.D.

doi:10.1117/12.476889

20 June 2003 Foveal photoreceptor explanation of short-term visual acuity recovery associated with laser-induced foveal damage

Amir Langus, Harry Zwick, Bruce E. Stuck, Michael Belkin M.D.

Author Affiliations +

Proceedings Volume 4953, Laser and Noncoherent Light Ocular Effects: Epidemiology, Prevention, and Treatment III; (2003) https://doi.org/10.1117/12.476889
Event: Biomedical Optics, 2003, San Jose, CA, United States

Abstract

Both human laser accident cases and non-human primate behavioral studies demonstrate the possibility of full visual acuity recovery following foveal laser injury. Current explanations of such recovery require suppositions of complex retinal reorganization dynamics or neural reorganization at higher order visual brain systems. However, recent investigation based on data of retinal photoreceptor and ganglion cell topography and connectivity, suggest that the amount of static inherent plasticity, already exists at the retinal level, may also explain visual acuity recovery in the presence of laser-induced foveal damage. Modeling the off-axis visual acuity while utilizing this data, produces a more gradual fall-off in visual acuity, and supports the notion that visual acuity recovery may reside in the topographical organization of the cones. Moreover, considering the filling-in phenomena, which can conceal the presence of retinal damage from being recognized, together with eye movements, could nullify scotoma, as long as the retinal damage is not too extensive.

Citation Download Citation

Amir Langus, Harry Zwick, Bruce E. Stuck, and Michael Belkin M.D. "Foveal photoreceptor explanation of short-term visual acuity recovery associated with laser-induced foveal damage", Proc. SPIE 4953, Laser and Noncoherent Light Ocular Effects: Epidemiology, Prevention, and Treatment III, (20 June 2003); https://doi.org/10.1117/12.476889

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