The British journal of ophthalmology · 2010
Use of the light-adjustable lens to correct astigmatism after cataract surgery.
Оценочное исследованиеСтатьяПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод пока не подготовлен
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Chayet Arturo, Sandstedt Chris, Chang Shiao, Rhee Paul, Tsuchiyama Barbara, Grubbs Robert, Schwartz Dan
Аннотация
AIM: To determine if residual cylindrical refractive error after cataract surgery can be adjusted using the light-adjustable lens (LAL).
METHODS: The LAL is a photosensitive silicone intraocular lens whose power can be adjusted post-operatively using UV light at 365 nm. A digital light delivery device (DLD) is used to adjust LAL power in situ to correct residual refractive errors non-invasively. Profiles developed to correct residual cylindrical and spherical errors were tested on five patients, with postoperative toric refractive errors of 1.25-1.75 D. At 2 weeks post-implantation, best corrected visual acuity (BCVA), uncorrected visual acuity (UCVA) and residual refractive errors were measured.
RESULTS: Toric error was reduced in each of the patients and refractions remained stable for the 9 month follow-up period. Achieved spherical equivalent manifest refraction (MRSE) was within 0.25 D of targeted emmetropia. All five patients improved their UCVA to >or=20/25 (<or=0.1 logarithm of the minimum angle of resolution (LogMAR)) and maintained their BCVA.
CONCLUSION: The LAL can be adjusted postoperatively to correct residual astigmatism.
METHODS: The LAL is a photosensitive silicone intraocular lens whose power can be adjusted post-operatively using UV light at 365 nm. A digital light delivery device (DLD) is used to adjust LAL power in situ to correct residual refractive errors non-invasively. Profiles developed to correct residual cylindrical and spherical errors were tested on five patients, with postoperative toric refractive errors of 1.25-1.75 D. At 2 weeks post-implantation, best corrected visual acuity (BCVA), uncorrected visual acuity (UCVA) and residual refractive errors were measured.
RESULTS: Toric error was reduced in each of the patients and refractions remained stable for the 9 month follow-up period. Achieved spherical equivalent manifest refraction (MRSE) was within 0.25 D of targeted emmetropia. All five patients improved their UCVA to >or=20/25 (<or=0.1 logarithm of the minimum angle of resolution (LogMAR)) and maintained their BCVA.
CONCLUSION: The LAL can be adjusted postoperatively to correct residual astigmatism.