Posters

Ocular biometric data and prevalence of corneal astigmatism in patients candidate for cataract surgery

Poster Details

First Author: S.Hashemian IRAN

Co Author(s):    S. Hashemian                    

Abstract Details

Purpose:

To present and analyse the biometric data and the prevalence of corneal astigmatism in cataract surgery candidates.

Setting:

Eye Research Center, The Five Senses Institute, Rassoul Akram Hospital, Iran University of Medical Sciences and Iranian Eye Clinic, Tehran, Iran.

Methods:

Ocular biometric and keratometric values were measured before surgery in patients having cataract extraction. Descriptive statistics of biometric and keratometric cylinder data and their correlations with sex and age were evaluated.

Results:

Ocular biometric and keratometric data from 2084 eyes of 2084 patients (mean age 66.43, range 19 to 95 years) were analyzed. The mean values were as follows: Corneal astigmatism 0.89 diopter (D), Mean corneal keratometry 44.29 D, Central corneal thickness 534 μ, Anterior chamber depth (ACD) 3.11 mm, Lens thickness 4.50 mm and Axial Length (AL) 23.35 mm. Corneal astigmatism was less than 1.25 D in 1660 (79.5%) of eyes. Astigmatism was with the rule (WTR) in 976(46.8%) of eyes, against the rule in 702(33.7%), and oblique in 406(19.5%). The ACD and axis of astigmatism were correlated with age. The amount of corneal astigmatism had no correlation with age and sex.

Conclusions:

Corneal astigmatism was higher than 1.25 D in about 21% of cataract surgery candidates with slight differences between the various age ranges and had no correlation with age and sex.

Financial Disclosure:

None