RT Journal Article
SR Electronic
T1 Use of the light-adjustable lens to correct astigmatism after cataract surgery
JF British Journal of Ophthalmology
JO Br J Ophthalmol
FD BMJ Publishing Group Ltd.
SP 690
OP 692
DO 10.1136/bjo.2009.164616
VO 94
IS 6
A1 Arturo Chayet
A1 Chris Sandstedt
A1 Shiao Chang
A1 Paul Rhee
A1 Barbara Tsuchiyama
A1 Robert Grubbs
A1 Dan Schwartz
YR 2010
UL http://bjo.bmj.com/content/94/6/690.abstract
AB 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 ≥20/25 (≤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.