Posters

Effect of Preoperative Keratometric Power on Intraoperative Complications in LASIK in 725,832 Eyes

Poster Details

First Author: F.Llovet Osuna SPAIN

Co Author(s):    A. Llovet-Rausell   J. Ortega-Usobiaga   M. Martínez-del-Pozo   C. Albelda-Vallés   R. Cobo-Soriano        

Abstract Details

Purpose:

To evaluate the effect of preoperative keratometric power on the intraoperative complications in Laser In Situ Keratomileusis (LASIK) using microkeratome

Setting:

Clinica Baviera/Care-Vision - AIER EYE Group

Methods:

This retrospective study evaluates the records of 725,832 eyes that underwent LASIK using four types of microkeratomes (Moria One, Hansatome XP, Moria 2 and Moria SBK) between December 1996 and February 2020 at Clínica Baviera / Care-Vision - AIER EYE Group (40 Refractive Surgery Centers from 4 countries, Spain, Italy, Germany, Austria) by 367 surgeons. All cases with microkeratome complications of the LASIK procedure were identified.

Results:

Sixty eight thousand two hundred and eighteen (9.39%) intraoperative microkeratome complications were identified: 1054 (0.154%) buttonholes, 5416 (0.746%) epithelial abrasion, 12 (0.002%) flap loss, 7763 (1.070%) free caps, 4922 (0.678%) incomplete pass, 47050 (6.482%) intraoperative bleeding, 1461 (0.201%) irregular flap, 429 (0.059%) partial flap and 111 (0.015%) other microkeratome-related problems. When eyes were stratifi ed according to preoperative keratometric power, eyes with flatter corneas usually had more free caps and incomplete flaps (p <0.0001). The incidence of buttonholes was independent of the preoperative keratometric power, but it was related to the Moria One and Moria 2 microkeratome model.

Conclusions:

Eyes with flatter corneas tended to have more free caps and partial flaps. The donut-shaped flaps (Buttonholes) was independent of the preoperative keratometric power, but it was related to the microkeratome model.

Financial Disclosure:

None