Intraocular lens movement and accommodation in eyes of young patients.

Purpose: To evaluate the position of posterior chamber intraocular lenses (PC IOLs) at distance and near and the amplitude of pseudoaccommodation in young eyes.

Setting: Department of Ophthalmology, University School of Medical Sciences, Bydgoszcz, Poland.

Methods: This study comprised 45 eyes of 38 patients aged 12 to 19 years who had removal of congenital cataract with implantation of a PC IOL. During the follow-up, the refractive error ranged between -1.00 and +1.00 diopter (D), and near visual acuity was 0.75 or 0.50 (Snellen) without additional correction. The position of the PC IOL was measured by A-mode ultrasound at distance and near. Pseudoaccommodation amplitude was calculated using Gullstrand's near-point rule.

Results: Mean anterior movement of the IOL was 0.42 mm at near. Mean pseudoaccommodation amplitude was 4.50 D. The correlation between these values was significant (P <.01).

Conclusion: The movement of PC IOLs in young patients may be one reason they attain good near vision without additional correction.