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Risk Assessment for Corneal Ectasia following Photorefractive Keratectomy
Joint Authors
Sorkin, Nir
Kaiserman, Igor
Domniz, Yuval
Sela, Tzahi
Munzer, Gur
Varssano, David
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-07-26
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Purpose.
To analyze the risk factors associated with a series of ectasia cases following photorefractive keratectomy (PRK) and all published cases.
Methods.
In a retrospective study on post-PRK ectasia patients, 9 eyes of 7 patients were included, in addition to 20 eyes of 13 patients from the literature.
Risk of post-PRK ectasia was calculated using the ectasia risk score system (ERSS) for laser in situ keratomileusis (LASIK) patients.
The percent tissue altered (PTA) was also evaluated.
Results.
ERSS scoring of zero for age, RSB, and spherical equivalent was found in 66%, 86%, and 86% of the eyes, respectively.
Pachymetry risk score was 2 in 60% of the eyes and 3 or 4 in 16% of the eyes.
Topography risk score was 3 in 41% of the eyes and 4 in 21% of the eyes.
Cumulative ectasia risk score was ≥4 (high risk) in 77% of the eyes and ≥3 (medium and high risk) in 86% of the eyes.
Average PTA was 23.2 ± 7.0%.
All eyes but one had a PTA < 40%.
Conclusions.
Preoperative corneal topographic abnormalities and thin corneas may be significant risk factors for developing ectasia following PRK.
Post-LASIK ectasia risk scoring also has relevance in the risk for developing post-PRK ectasia.
American Psychological Association (APA)
Sorkin, Nir& Kaiserman, Igor& Domniz, Yuval& Sela, Tzahi& Munzer, Gur& Varssano, David. 2017. Risk Assessment for Corneal Ectasia following Photorefractive Keratectomy. Journal of Ophthalmology،Vol. 2017, no. 2017, pp.1-10.
https://search.emarefa.net/detail/BIM-1184647
Modern Language Association (MLA)
Sorkin, Nir…[et al.]. Risk Assessment for Corneal Ectasia following Photorefractive Keratectomy. Journal of Ophthalmology No. 2017 (2017), pp.1-10.
https://search.emarefa.net/detail/BIM-1184647
American Medical Association (AMA)
Sorkin, Nir& Kaiserman, Igor& Domniz, Yuval& Sela, Tzahi& Munzer, Gur& Varssano, David. Risk Assessment for Corneal Ectasia following Photorefractive Keratectomy. Journal of Ophthalmology. 2017. Vol. 2017, no. 2017, pp.1-10.
https://search.emarefa.net/detail/BIM-1184647
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1184647