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BMC Ophthalmology

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Open Access 01-12-2023 | Refractive Surgery | Research article

Symmetric offset versus asymmetric offset ablation with transepithelial refractive keratectomy

Authors: Diego de Ortueta, Dennis von Rüden, Samuel Arba Mosquera

Published in: BMC Ophthalmology | Issue 1/2023

Abstract

Background

In eyes with hyperopia, astigmatism, and mixed astigmatism Transepithelial photorefractive keratectomy (TransPRK) is a modality of surface ablation surgery. We center on the corneal vertex for all our treatments (all have an offset to the center of the pupil) and wanted to compare the visual results of symmetrical profile treatments versus asymmetrical profile treatments (the center of the treatment on the vertex and the boundaries with the pupil center) using TransPRK as corneal refractive surgery.

Methods

We retrospectively analyzed two consecutive groups of eyes treated with TransPRK in the Aurelios Augenlaserzentrum Recklinghausen: 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 eyes were within the spherical equivalent of 0.5 D from the target in the symmetric and asymmetric offset groups, respectively. 85 and 84% of eyes had a postoperative astigmatism of 0.5 D or lower in the symmetric and asymmetric offset groups, respectively.

Conclusion

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

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Title: Symmetric offset versus asymmetric offset ablation with transepithelial refractive keratectomy
Authors: Diego de Ortueta
Dennis von Rüden
Samuel Arba Mosquera
Publication date: 01-12-2023
Publisher: BioMed Central
Keywords: Refractive Surgery
Keratectomy
Published in: BMC Ophthalmology / Issue 1/2023
Electronic ISSN: 1471-2415
DOI: https://doi.org/10.1186/s12886-023-02971-9

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Symmetric offset versus asymmetric offset ablation with transepithelial refractive keratectomy

Abstract

Background

Methods

Results

Conclusion

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Background

Methods

Results

Conclusion

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