Posters

Reliability of intraoperative aberrometry in predicting IOL power in post refractive surgery eyes

Poster Details

First Author: K.Bazgain INDIA

Co Author(s):    J. Ram   P. Chawla Gupta   S. Yangzes   A. Jain           

Abstract Details

Purpose:

To check the reliabilty of Optiwave refractive analysis (ORA) (The ORA™ System, WaveTec Vision, Inc, Aliso Viejo, California) in calculating IOL (Intraocular lens) power in post-refractive surgery eyes.

Setting:

The study was done in a tertiary care centre in North India.

Methods:

A prospective study that included 16 eyes which had undergone kerato-refractive surgery in the past either Radial Keratotomy (RK) or Laser insitu keratomileusis (LASIK). They underwent either Femtosecond Laser Assisted Cataract Surgery (FLACS) or conventional phacoemulsification. IOL power was calculated using IOLMaster (ZEISS IOLMaster® 500 Carl Zeiss Meditech, Jena, Germany) and ORA in all the patients and compared. The difference between the IOL power calculated by IOLMaster and ORA was evaluated.

Results:

Out of 14 patients (16 eyes) with visually significant cataract, aged 30 years and above, six were males and eight females. Preoperative keratorefractive surgical procedure was LASIK in four eyes and RK in 12 eyes. Nine (56.3%) eyes underwent FLACS and Seven (43.7%) eyes underwent conventional phacoemulsification. In all patients, the implanted IOL power was based on intraoperative ORA. The difference in the IOL power calculated by IOLMaster and ORA was significant with a p-value of 0.00.

Conclusions:

In post-keratorefractive eyes with significant cataract, ORA is a more reliable predictor in calculating the IOL power in eyes undergoing either FLACS or conventional phacoemulsification.

Financial Disclosure:

None