ESCRS - PO1037 - Symmetric Offset Versus Asymmetric Offset Ablation With Transepithelial Refractive Keratectomy.

Symmetric Offset Versus Asymmetric Offset Ablation With Transepithelial Refractive Keratectomy.

Published 2023 - 41st Congress of the ESCRS

Reference: PO1037 | Type: Free paper | DOI: 10.82333/2x7n-7451

Authors: Diego De Ortueta* 1

1Augenlaserzentrum ,AURELIOS,Recklinghausen ,Germany

Purpose

In eyes with hyperopia, astigmatism, and mixed astigmatism Transepithelial photorefractive keratectomy (TransPRK) is a modality of surface ablation. We center on the corneal vertex in all our treatments and wanted to compare the visual results of symmetrical treatment versus asymmetrical treatment with TransPRK.

Setting

Aurelios Augenzentrum Recklinghausen

Methods

We retrospectively analyzed 2 consecutive groups of eyes: 47 eyes treated with symmetrical offset and 51 eyes treated with asymmetrical offset. The intergroup comparisons were assessed using unpaired Student’s T-tests, whereas preoperative to postoperative changes were assessed using paired Student’s T-tests. 

Results

Refractive outcomes were good for both groups.  83% and 88% of the eyes were within the spherical equivalent of 0.5D from the target in the symmetric and asymmetric offset groups, respectively. 85% and 84% eyes had a postoperative astigmatism of 0.5D or lower in the symmetric and asymmetric offset groups, respectively.

Conclusions

We have not found a significant difference in the refractive outcomes between the symmetric group and the asymmetric group of eyes that were treated both with TransPRK for preoperatively hyperopic or mixed astigmatism.