Q-Switched Nd:YAG laser Posterior Capsulotomy of the Aphakia and Pseudophakia Inserted with Posterior Chamber IOL

To get the pure clinical results of Yag Laser Posterior Capsulotomy, excluding all the possible factors that might affect the results of that, we performed posterior capsulotomies on after cataracts(118 eyes) by using Q-switched Nd:Yag laser from February 1987 to August 1989 and reviewed the results. Group A is composed of 68 surgical aphakic eyes and group B is composed of 50 Posterior chamber pseudophakic eyes. The results were as follows: 1. One eye in groupA and one eye in group B were congenital cataracts and the others were all adult and senile cataracts. 2. As a result of posterior capsulotomy, 59 eyes(86.8%) in group A and 42(84%) in group B were above 0.5 in corrected visual acuity. 3. On performing, the power setting was under 1.5mJ in 59 eyes(86.8%) in groupA and 40 eyes(80%) in group B. 4. Ocular complications developed in 35 eyes(51.5%) in group A and 15 eyes(30%) in group B. 5. Good preoperative ocular condition may predict good postoperative clinical results. 6. Less energy and pulses in operation combined with less occurrences of vitrous prolapse in group B might be associated with less development of postoperative complications in group B than in group A.

Apparent accommodation in monocular pseudophakic eyes and contact lens wearing monocular aphakic eyes

To investigate the presence of apparent accommodation in monocular pseudopakic eyes and contact lens wearing monocular aphakic eyes, we measured it in 54 monocular pseudophakic eyes (54 patients) and 40 contact lens wearing monocular aphakic eyes (40 patients). The mean apparent accommodation was 1.68+/-1.25 diopters in monocular pseudophakic eyes and 1.74+/-0.73 diopters in contact lens wearing monocular aphakic eyes, and there was no statistically significant difference between them. Apparent accommodation was not related either to type of intraocular lenses or pupil size in pseudophakic eyes and not related to target size in aphakic eyes, but it was influenced by pupil size in aphakic eyes. In the group of patients aged between 45 and 55, accommodation in phakic eyes was significantly greater than apparent accommodation in contralateral contact lens wearing monocular aphakic eyes.