Posters

Evaluation of Barrett Universal II formula for intraocular lens power calculation in high myopic patients using optical biometry

Poster Details

First Author: N.Bahgat EGYPT

Co Author(s):    D. Aziz   N. Hassan   M. Mohamed              

Abstract Details

Purpose:

To evaluate the accuracy of  different formulae for calculating the intraocular lens (IOL) power for eyes with an axial length (AL) ≥ 26.0 mm using optical biometry.

Setting:

Cairo University Hospital.

Methods:

The study included twenty eyes with high axial myopia AL ≥ 26 mm having Immature cataract.Optical biometry was done using 3 different IOL formulae, which are; third-generation formulae such as SRK/T and fourth-generation formulae such as Haigis & Barrett Universal II , with target refraction -1.00 D.Phacoemulsification was done with In the Bag implantation of IOL power based on Barrett Universal II formula aiming for -1.00 D postoperative refraction.

Results:

Twenty eyes were enrolled in the study. A mean predictive error of (+/- 0.67D)was detected with Barrett Universal II formula showing the lowest mean absolute error(MAE)(0.61D) and SRK/T and Haigis had similar MAE (0.72&0.74 D respectively).

Conclusions:

Barrett Universal II formula produced the lowest predictive error compared with SRK/T and Haigis formulas.For high myopic eyes,the Barette Universal II may be the best choice.

Financial Disclosure:

None