Copenhagen 2016 Registration Programme Exhibitor Information Virtual Exhibition Satellite Meetings Glaucoma Day 2016 Hotel Star Alliance
title

10 - 14 Sept. 2016, Bella Center, Copenhagen, Denmark

This Meeting has been awarded 27 CME credits

 

escrs app advert yo advert

Posters

Search Title by author or title

Analysis of corneal astigmatism and other biometry parameters in consecutive cataract surgery candidates

Poster Details

First Author: I. Casal PORTUGAL

Co Author(s):    S. Monteiro   C. Abreu   V. Lages   P. Meneres           

Abstract Details

Purpose:

To analyse biometry data especially corneal astigmatism pattern in consecutive cataract surgery candidates.

Setting:

Department of Ophtalmology of a tertiary referral centre in Oporto, Portugal – Centro Hospitalar do Porto

Methods:

Biometry data measured by IOL master system® were colleted and analyzed in consecutive patients enrolled for cataract surgery in 1 month. We’ve analyzed the axial length(AL), anterior chamber depth(ACD), corneal powe (keratometry, flat K and steep K) and corneal astigmatism. We considered with-the-rule(WTR) astigmatism when the axis of the correcting negative cylinder was within 180 ± 30 degrees; against-the-rule(ATR) astigmatism when the axis of the correcting negative cylinder was within 90 ± 30 degrees; and oblique astigmatism if it was neither WTR nor ATR. Patients with corneal disease, history of ocular trauma or previous corneal surgery were excluded.

Results:

322 eyes were included(60,9 %female).Mean age was 71,5±9,9 years. Mean values of AL,ACD,K1,K2 and corneal astigmatism were 23,5±1,6; 3,05±0,41 ; 43,5±1,6 ; 44,5±1,7 and 1,04± 0,75,respectively. Corneal astigmatism was<0,50 Diopters(D) in 23,3% of the eyes;0,50-0,99 D in 32,9%;1,00-1,49 in 23,9% and ≥1,50 D in 19,9%. 41,9% had WTR astigmatism,39,1% ATR astigmatism and 18,9% oblique astigmatism.We observed increasing frequency of ATR astigmatism with age,resulting in a statistically significant higher median age in ATR astigmatism group(p = 0.038). In the< 50 year-old group only 21,4% had ATR astigmatism while in the>80 year-old group 41,9% had ATR astigmatism. The opposite was found with WTR astigmatism- in the<50 year-old group 64,3% had WTR astigmatism while the same value in the>80 year-old group was 39,2%.

Conclusions:

In our population the astigmatism axis was predominantly WTR, the frequency of ATR astigmatism increased with age and we found a significant percentage of 1,50 D or higher corneal astigmatism. These ocular biometric data can contribute to a better understanding of the astigmatism pattern in cataract surgery candidates as well as improve surgical procedures.

Financial Disclosure:

NONE

Back to Poster listing