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The limits of manifest refraction: visual performance under low light conditions
Author(s) -
CABEZA J
Publication year - 2010
Publication title -
acta ophthalmologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.534
H-Index - 87
eISSN - 1755-3768
pISSN - 1755-375X
DOI - 10.1111/j.1755-3768.2010.4423.x
Subject(s) - mesopic vision , wavefront , optometry , refraction , optics , pupil , visual acuity , medicine , pupil size , computer science , ophthalmology , physics , retinal , photopic vision
Abstract Purpose To present a method to optimize the prescription values of ophthalmic lenses based on ocular wavefront information. Those lenses provide improved vision under low light conditions to the patient. Methods We will show first the influence of ocular aberrations on visual performance, and how do they change with pupil size. We will also show the way higher order aberrations affect the manifest refraction procedure. Finally, we will present a method to optimize the prescription values of ophthalmic lenses based on ocular wavefront information. Results Independent studies have shown that such optimized ophthalmic lenses provide on average an improvement in visual acuity of almost one line under mesopic conditions, when compared to conventional opththalmic lenses. Conclusion Visual performance under low light conditions can be improved by ophthalmic lenses whose prescription was optimized taking into account ocular wavefront information.Commercial interest