Symmetric offset versus asymmetric offset ablation with transepithelial refractive keratectomy

BMC Ophthalmology

Research Article

Diego de Ortueta¹  Dennis von Rüden¹  Samuel Arba Mosquera² 

[1] Aurelios Augenlaserzentrum Recklinghausen, Erlbruch 34-36, 45657, Recklinghausen, Germany;SCHWIND Eye-Tech-Solutions, 63801, Kleinostheim, Germany;

关键词: Transepithelial photorefractive keratectomy;    TransPRK;    Photorefractive keratectomy;    PRK;    Corneal vertex;    Hyperopia;    Myopia;    Astigmatism;    Pupil offset;   

DOI  :  10.1186/s12886-023-02971-9

 received in 2022-08-23, accepted in 2023-05-09,  发布年份 2023

来源: Springer

【 摘 要 】

BackgroundIn 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.ResultsRefractive 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.ConclusionWe 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.

【 授权许可】

CC BY   
© The Author(s) 2023

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