晶状体后囊膜下混浊对丙烯酸折叠式人工晶状体光学质量的影响。
Influence of glistenings on the optical quality of acrylic foldable intraocular lens.
作者信息
Oshika T, Shiokawa Y, Amano S, Mitomo K
机构信息
Department of Ophthalmology, University of Tokyo School of Medicine, Tokyo, Japan.
出版信息
Br J Ophthalmol. 2001 Sep;85(9):1034-7. doi: 10.1136/bjo.85.9.1034.
AIMS
To assess the influence of glistenings on the optical quality of acrylic foldable intraocular lens.
METHODS
Several degrees of glistenings in the optic were experimentally created by immersing the lens in water at 37 degrees C for 48 hours and then at 25 degrees C for 24 hours. Optical bench tests were carried out in water including measurements of spectral transmittance with the spectrophotometer, intensity of forward scattering using the integrating sphere photometer, modulation transfer function, and resolving power at various contrasts with and without the veiling glare light source.
RESULTS
Glistenings of 1+ to 4+ degrees were created, among which the 4+ glistenings seemed to be extremely intense and thought to be beyond the range of clinical settings. Clinically feasible level of glistenings, up to 3+, did not adversely influence spectral transmittance, scattering, modulation transfer function, and resolving power at various contrasts. The 4+ glistenings caused mild to moderate deteriorations of the optical quality of the lens.
CONCLUSION
The optical quality of the acrylic foldable intraocular lens is not significantly affected by the level of glistenings usually seen in the clinical setting.
目的
评估晶状体闪光对丙烯酸可折叠人工晶状体光学质量的影响。
方法
通过将晶状体在37℃水中浸泡48小时，然后在25℃水中浸泡24小时，在光学部实验性地产生不同程度的闪光。在水中进行光学平台测试，包括用分光光度计测量光谱透过率、用积分球光度计测量前向散射强度、调制传递函数以及在有无遮蔽眩光光源情况下不同对比度下的分辨力。
结果
产生了1+至4+度的闪光，其中4+度的闪光似乎极其强烈，被认为超出了临床范围。临床上可行的闪光水平，最高为3+，在不同对比度下对光谱透过率、散射、调制传递函数和分辨力没有不利影响。4+度的闪光导致晶状体光学质量轻度至中度下降。
结论
临床环境中常见的闪光水平对丙烯酸可折叠人工晶状体的光学质量没有显著影响。
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