Apparent Accommodation in Posterior Chamber IOL Implanted Eyes

ABSTRACT

In order to evaluate the cause of apparent accommodation in pseudophakia, we performed ECCE and implanted biconvex, monofocal I0L in the bag in 24 patients(32 eyes) and followed up for more than 2 months. We measured apparent accommodation, corneal astigmatism and near visual acuity. And we also measured apparent accommodation and the changes of anterior chamber depth according to the movement of I0L and apparent accommodation according to the changes of pupil diameter in normal state before drug instillation and after instillation of either 10% phenylephrine or 2% pilocarpine. The results were as follows: 1. The mean apparent accommodation was 1.36 +/- 0.52 diopters. 2. There was negative correlation between corneal astigmatism and apparent accommodation and between cornel astigmatism and near visual acuity. 3. There was negative correlation between anterior chamber depth and apparent accommodation measured in normal state before drug instillation. And also there was negative correlation between the changes of anterior chamber depth and the changes of apparent accommodation measured after instillation of either 10% phenylephrine or 2% pilocarpine. 4. There was positive correlation between reciprocal changes of pupil diameter and apparent accommodation. So we conclude that the apparent accommodation is seemed! to be a resultant changes according to the changes of the pupil diameter.