Efficacy of corneal cooling on postoperative pain management after photorefractive keratectomy: a contralateral eye randomised clinical trial

Session Details

Session Title: Surface Photoablation/PRK

Session Date/Time: Tuesday 25/09/2018 | 14:00-16:00

Paper Time: 14:24

Venue: Room A3, Podium 2

First Author: : M.Abrishami IRAN

Co Author(s): :    S. Zarei-Ghanavati   N. Nosrat                 

Abstract Details

Purpose:

To compare chilled and room temperature balanced salt solution (BSS) and bandage contact lens (BCL) on post photorefractive keratectomy (PRK) pain.

Setting:

Eye Research Center, Khatam Eye Hospital, Mashhad University of Medical Sciences, Mashhad, Iran.

Methods:

In a prospective, single-masked, controlled eye study, one hundred eyes of fifty patients were divided into two groups which received room temperature or chilled BSS and BCL in each eye, and compared for post-PRK pain. Three different pain evaluation systems were used to evaluate pain between the groups at 1 and 6 h and days 1, 2, 3, 5, and 7, postoperatively.

Results:

The mean spherical equivalent of preoperative refractive error in both groups was not statistically significantly different (-4.18±1.5 in chilled and -4.19±1.7 in room-temperature groups, P=0.94). The mean time of epithelial healing was 6.16 ± 1.7days in the chilled and 6.10 ± 1.59 in the room temperature group (P=0.32). Best corrected visual acuity (BCVA) at 1 month was 0.013 ± 0.03 in the chilled group and 0.014 ± 0.04 in the room temperature group postoperatively (in logMAR scale) (P 0.84). No statistically significant difference was found between the two groups by any of the three pain scoring systems.

Conclusions:

Chilled BSS and BCL do not seem to be superior to room temperature in reducing post-PRK pain.

Financial Disclosure:

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