Department of Ophthalmology, Shimane University, Enya 89-1, Izumo, Shimane, 693-8501, Japan.
J Cataract Refract Surg. 2010 Feb;36(2):299-307. doi: 10.1016/j.jcrs.2009.08.036.
To record and compare the spectral transmission characteristics of foldable untinted and yellow-tinted intraocular lenses (IOLs) and evaluate the protective effects against retinal damage by sunlight.
Shimane University Faculty of Medicine, Izumo, Japan.
The study evaluated 3 untinted IOLs (SA60AT, VA-60BBR, AU6 K) and 3 yellow-tinted IOLs (SN60AT, YA-60BBR, AU6 N) of 3 lens powers (+10.0 diopters [D], +20.0 D, and +30.0 D). Spectral transmittance in the wavelength range of 300 to 800 nm was measured using a spectrophotometer through 2.5 mm and 4.5 mm diameter apertures. Retinal hazard indices, including blue-light irradiance and maximum permissible exposure duration per day (t(max)) for viewing sunlight, were calculated.
The untinted IOLs completely absorbed ultraviolet (UV) light and nearly completely absorbed transmitted visible light at wavelengths longer than 440 nm. Yellow-tinted IOLs absorbed more in the blue-light range (400 to 500 nm) than untinted IOLs. The blue-light irradiance was 34.2% to 56.0% lower with the SN60AT IOL than with the SA60AT IOL, 35.2% to 48.4% lower with the YA-60BBR IOL than with the VA-60BBR IOL, and 16.8% to 22.9% lower with the AU6 N IOL than with the AU6 K IOL. Blue-light irradiance values of SN60AT and YA-60BBR IOLs decreased as the lens power increased.
Compared with aphakic eyes, UV-blocking untinted IOLs reduced the blue-light irradiance value by 60%; yellow-tinted IOLs conferred an additional 17% to 56% reduction. The difference in lens power was significantly related to the blue-light irradiance value of some yellow-tinted IOLs. .
记录和比较折叠式无色和黄色 tinted 人工晶状体（IOLs）的光谱透射特性，并评估其对阳光造成的视网膜损伤的保护作用。
日本岛根大学医学系，出云市。
本研究评估了 3 种无色 IOL（SA60AT、VA-60BBR、AU6 K）和 3 种黄色 tinted IOL（SN60AT、YA-60BBR、AU6 N）的 3 种透镜功率（+10.0 屈光度 [D]、+20.0 D 和 +30.0 D）。使用分光光度计通过 2.5 毫米和 4.5 毫米直径孔径测量 300 至 800nm 波长范围内的光谱透射率。计算视网膜危害指数，包括日光下的蓝光辐照度和每天最大允许暴露时间（t(max)）。
无色 IOL 完全吸收紫外线（UV）光，并且在波长大于 440nm 时几乎完全吸收透射可见光。黄色 tinted IOL 在蓝光区域（400 至 500nm）的吸收多于无色 IOL。SN60AT IOL 的蓝光辐照度比 SA60AT IOL 低 34.2%至 56.0%，YA-60BBR IOL 比 VA-60BBR IOL 低 35.2%至 48.4%，AU6 N IOL 比 AU6 K IOL 低 16.8%至 22.9%。随着透镜功率的增加，SN60AT 和 YA-60BBR IOL 的蓝光辐照度值降低。
与无晶状体眼相比，UV 阻断无色 IOL 将蓝光辐照度值降低了 60%；黄色 tinted IOL 进一步降低了 17%至 56%。透镜功率的差异与一些黄色 tinted IOL 的蓝光辐照度值显著相关。
