Asymptomatic haptic migration of angle-supported phakic anterior chamber intraocular lens through the peripheral iridectomy: a case series

Session Details

Session Title: Phakic IOLs I

Session Date/Time: Monday 07/09/2015 | 14:30-16:30

Paper Time: 15:00

Venue: Room 10

First Author: : F.Sammouh LEBANON

Co Author(s): :    T. Baban   H. Ballouz   E. Warrak              

Abstract Details

Purpose:

To report a case series of haptic migration in patients with angle-supported phakic anterior chamber intraocular lens (Phakic6H®) through the superior peripheral iridectomy (PI).

Setting:

Advanced Eye Care Hospital, Naccach, Lebanon

Methods:

The charts of 23 patients (35 eyes) with at least 6 months postoperative follow-up were retrospectively reviewed. Work up included, preoperative and postoperative cycloplegic and manifest refractions, uncorrected visual acuity (UCVA) and best-corrected visual acuity (BCVA), slit-lamp examination, fundoscopy, corneal topography and biometry. UCVA and BCVA were reported in logMAR units.

Results:

UCVA had a mean of 1.67 ±0.30 (1.17-2.00) for all 35 eyes preoperatively, and 0.35 ±0.25 (0.00-1.00) postoperatively (P<0.001; 95%CI 1.21-1.44). Similarly, BCVA had a mean of 0.31 ± 0.26 (0.00-1.17) for all 35 eyes preoperatively, and 0.22 ± 0.25 (0.00-1.17) postoperatively (P<0.001; 95%CI 0.04-0.14). Haptic migration into the superior PI was noted in 8 eyes (23%). The first migration was noted 2 years postoperatively and the last occurred 8 years after implantation with mean of 5.6 ±2 years. There was no statistically significant difference in the BCVA from 0.28 ±0.38 (0.00-1.17) postoperatively and 0.27 ± 0.38 (0.00-1.17) measured after haptic migration (P=0.35; 95% CI -0.02 to +0.42). Postoperative follow up ranged between 8 months and 8.5 years.

Conclusions:

Angle-supported phakic anterior chamber intraocular lens implantation is a safe and effective procedure. However, there is a 23% incidence of haptic migration in our series with no sequelae on BCVA or harmful effect on the intraocular structures. This movement of the intraocular lens can be explained by changes in aqueous dynamics especially at the level of the PI leading to migration of the haptic into the area of least resistance which is the iridectomy site.

Financial Interest:

NONE