Pinhole iris-fixated intraocular lens for severe dysphotopsia and photophobia

Session Details

Session Title: Phakic IOLs I

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

Paper Time: 14:42

Venue: Room 10

First Author: : G.Muñoz SPAIN

Co Author(s): :    S. Rohrweck   H. Sakla   W. Altroudi   C. Albarran-Diego           

Abstract Details

Purpose:

To present a new design of iris-claw intraocular lens (IOL) which comprises a black diaphragm with a central aperture, that we call the pinhole iris-fixated IOL. The lens is designed around the principle of a pinhole to make use of paraxial rays which are less affected by the abnormal refractive effects of corneal irregular astigmatism and corneal higher order aberrations (HOAs). This new design may be used in cases of severe dysphotopsia and light sensitivity resistant to other modalities of treatment.

Setting:

Ebsaar Eye Surgery Center, Dubai (UAE) and Clínica Baviera Castellón,Spain

Methods:

The pinhole diaphragm IOL (Ophtec BV) is a custom made rigid concave–convex 1-piece black polycarbonate IOL with an 8.5 mm overall length, a 6-mm diameter optic, iris-claw haptics, and a central hole which is variable between 2.0 mm and 4.0 mm. The IOL was implanted in a 36-year-old man who showed a history of debilitating dysphotopsia and severe light sensitivity following several interventions for keratoconus. The diameter of the central opening of the pinhole IOL -2 mm- was chosen to minimize the effect of corneal HOAs in the quality of the retinal image.

Results:

The patient presented marked improvement in all symptomatology including light sensitivity and ghosting which extended for all the follow-up visits. Strehl ratio improved from 0.0939 preoperatively to 0.5913 after surgery; HOAs RMS decreased from 0.154 µm to 0.067 µm.

Conclusions:

The pinhole iris-fixated IOL may represent a new alternative for severe dysphotopsia and light sensitivity due to corneal irregular astigmatism and increased HOAs refractory to other modalities of treatment.

Financial Interest:

NONE