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Immediate post-PRK use of Tetracaine drops and duration of contact lens wearing prior to surgery

Poster Details

First Author: C.Tabatabay SWITZERLAND

Co Author(s):    C. Liernur              

Abstract Details



Purpose:

The purpose of this study is to determine whether the use of Tetracaine drops as a pain reliever in the immediate post-PRK treatment period is related to the duration of contact lenses wearing by the patient prior to refractive surgery.

Setting:

The study was conducted on 420 eyes of 214 patients that underwent PRK refractive surgery from March 2004 to December 2012. Pre-operative spherical myopia was ranging from -1.0 to -10.0 dioptres. Patients were aged between 19 and 55. PRK was performed with a Nidek 5000 Excimer laser. At the end of the procedure, the group of 214 patients was given one single-use unit of Tetracaine to ease their pain, if necessary.

Methods:

Patients of total study group were divided into 4 sub-groups: non-users of contact lenses; users up to 5 years pre-op; users from 5 to 10 years pre-op; users above 10 years pre-op. How many patients of the total study group used Tetracaine drops post-op? For how long have the patients weared contact lenses prior to PRK surgery? Is there a correlation between the duration of contact lenses wearing and the degree of pain, further so the need of Tetracaine drops?

Results:

2/3 of the total study group used Tetracaine drops in the immediate post-PRK period. Within the 4 different sub-groups of the total study group, there was no significant correlation between mid and long-term contact lenses wearers, or short term and non-users of contact lenses and degree of post-op pain and, thus, the need of Tetracaine drops. Moreover, Tetracaine use did not delay corneal re-epitheliation when compared to non-users. Pre and post-PRK treatment contrast sensitivity was comparable in both groups of users and non-users. No post-op retinal complications have been observed in any of the study groups.

Conclusions:

Duration of contact lenses wearing prior to PRK refractive surgery does not seem to have a correlation with the degree of uncomfort and immediate post-operative pain. Therefore, based on this sole information, the need of Teteracaine in the immediate post-operative period cannot be predictable.

Financial Disclosure:

NONE

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