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.