London 2014 Registration Visa Letters Programme Satellite Meetings Glaucoma Day 2014 Exhibition Hotel Booking Virtual Exhibition Star Alliance
london escrs

Course handouts are now available
Click here


Come to London

video-icon

WATCH to find out why


Site updates:

Programme Updates. Programme Overview and - Video Symposium on Challenging Cases now available.


Posters

Search Abstracts by author or title
(results will display both Free Papers & Poster)

Safety and efficacy of Precizon toric intraocular lens implantation: a prospective study

Poster Details

First Author: S.Hamada UK

Co Author(s):    A. Anbari   D. Lake           

Abstract Details



Purpose:

To determine the change in cylindrical power of the eye (difference between post-operative subjective refractive cylinder and pre-op corneal cylinder) and compare it with existing literature of IOL models without 'Transitional Conic Surface'

Setting:

Tertiary referral eye centre in the UK

Methods:

Prospective, open-label, non-randomized, single centre, cataract patients with pre-existing corneal astigmatism. 15 subjects were enrolled. Implantation of the PRECIZON toric intraocular lens was performed. All subjects in the investigation were evaluated pre and post operatively at day 1, month 1 and month 3. The following measurements were performed at various time points: refraction, UDVA, CDVA, applanation tonometry, slit lamp examination/photography, corneal topography and laser interference biometry, and wavefront analysis Outcome measures of efficacy were postoperative residual refractive astigmatism, ocular higher order aberration (spherical aberration (SA), coma, trefoil, and visual quality (modulation transfer function (MTF) and Strehl ratio. Outcomes measures for safety were reduction of BCVA by more than 2 lines, and any other reported operative or post-operative complications

Results:

15 patients completed the study At the last follow-up, there was a significant improvement of the following parameters compared with preoperative measurements. UDVA (0.8 ± 0.22 vs. 0.10 ± 0.24 log MAR; p < 0.05), cylindrical refraction (-2.72 ± 1.04 vs. -1.21 ± 0.9 D; p < 0.01), and refractive spherical equivalent (-3.46 ± 4.58 vs. -0.34 ± 1.1 D; p < 0.05). Residual astigmatism on the target axis was less than 0.5D (p < 0.01). Total ocular coma and trefoil were reduced compared with preoperative data in all patients and average Strehl ratio was 0.064.

Conclusions:

PRECIZON aspheric toric intraocular lens is safe and effective for correcting corneal astigmatism during cataract surgery. FINANCIAL INTEREST: NONE

Back to Poster listing