Codet Vision Institute, Tijuana, Mexico.
Br J Ophthalmol. 2010 Jun;94(6):690-2. doi: 10.1136/bjo.2009.164616.
To determine if residual cylindrical refractive error after cataract surgery can be adjusted using the light-adjustable lens (LAL).
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.
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.
The LAL can be adjusted postoperatively to correct residual astigmatism.
确定白内障手术后残余的圆柱状屈光误差是否可以通过光可调式人工晶状体（LAL）进行调整。
LAL 是一种光敏性硅胶眼内晶状体，其在术后可以使用 365nm 的紫外光进行调整。数字光传递装置（DLD）用于在原位调整 LAL 功率，从而非侵入性地矫正残余屈光误差。为了测试对残余圆柱和球镜误差的矫正效果，在五名患者中进行了测试，他们的术后散光性屈光误差为 1.25-1.75D。在植入后 2 周，测量最佳矫正视力（BCVA）、未矫正视力（UCVA）和残余屈光误差。
每位患者的散光性误差都得到了降低，并且在 9 个月的随访期间，屈光状态保持稳定。获得的等效球镜（MRSE）与目标正视化相差 0.25D 以内。所有五名患者都提高了 UCVA 至>20/25（<0.1 最小角分辨率对数（LogMAR）），并保持了 BCVA。
LAL 可以在术后进行调整以矫正残余散光。
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