Visual quality with acrylic angle-fixated phakic IOLs versus LASIK in high myopes

Session Details

Session Title: Interactive Free Paper Session: Anterior chamber phakic IOLS

Session Date/Time: Tuesday 16/09/2014 | 16:30-18:00

Paper Time: 17:24

Venue: Auditorium

First Author: : M.Roshdy EGYPT

Co Author(s): :    A. Hassouna   S. Wahba   M. Elbahrawy        

Abstract Details

Purpose:

To assess the difference in visual quality after correcting high myopia with foldable acrylic angle-fixated phakic intraocular lenses (pIOLS) and LASER in situ keratomeleusis (LASIK)

Setting:

Al-Watany (National) Eye Hospital, Cairo, Egypt

Methods:

In a prospective randomised clinical trial, 30 eyes (15 in each group) with preoperative myopia greater than or equal to -6.0 D manifest spherical equivalent (SE) underwent acrylic angle-fixated pIOL implantation (Cachet, Alcon Labs.) or wavefront optimised LASIK (EX500, WaveLight, Alcon Labs.). Eyes with amblyopia or any organic pathology affecting vision are excluded. Preoperative and three months postoperative subjective refraction, UDVA, CDVA (LogMAR), both photopic and mesopic contrast sensitivity (CS), corneal tomography and wavefront aberrometry were recorded.

Results:

The age, preoperative SE, astigmatism, and CDVA were 26.9±7, -8.86±1.58, -1.33±0.95 and 0.13±0.13, respectively. The two groups were not statistically different in these parameters (P=.62, .51, .32 and .67 respectively). The statistically significant changes were only in root mean square (RMS) of fifth order aberrations which was reflected as better CS in pIOLs group only in mesopic CS at six cycles per degree (CPD) (P= .03 and .02 respectively). No statistically significant difference were detected in third, fourth or six orders RMS (P= .94, .76 and .99 respectively), 3, 6, 12 and 18 CPD photopic CS (P= .48, .21, .13 and .12 respectively) and 3, 12, 18 CPD mesopic CS (P= .56, .19 and .26 respectively), or in the difference between preoperative CDVA and postoperative UDVA (P=.47)

Conclusions:

Both wavefront optimised LASIK and foldable acrylic angle supported pIOLs are acceptable ways in correcting myopia greater than or equal -6D SE. PIOLs advantage is confined to RMS of fifth order aberrations and 6 CPD mesopic CS.

Financial Interest:

One or more of the authors... travel has been funded, fully or partially, by a company producing, developing or supplying the product or procedure presented