Rigendinger, Fritz; Aebersold, Daniel; Cvejic, Zeljka; Pajic, Bojan (2021). Changes of Corneal Biomechanical Properties upon Exclusive Ytt-/Sr-90 Irradiation of Pterygium. Sensors, 21(3) MDPI 10.3390/s21030975
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BACKGROUND
It is known that pterygia above a certain size cause astigmatism and other aberrations of the human cornea and thus impair the quality of vision. Exclusive Sr-/Ytt-90 beta irradiation is a highly effective treatment for primary pterygia. The aim of this retrospective study is to determine the extent to which higher order corneal aberrations are affected by this treatment.
METHODS
Evaluation of corneal topographies and wavefront aberration data of 20 primary pterygia patients generated before and at different points in time in the first year after irradiation. Additionally, the size of the pterygium was measured.
RESULTS
The study showed a significant increase in coma and triple leaf aberrations in pterygia with a horizontal length of 2 mm and more. It was also found that a pterygium size greater than 2 mm significantly induces astigmatism. Both phenomena reduce visual quality. In none of the patients could a pterygium recurrence be detected after irradiation.
CONCLUSIONS
If the pterygium size is less than 2 mm, early exclusive Sr/Ytt-90 beta irradiation can be recommended. If the size is more than 2 mm, a pterygium excision 6 months after beta irradiation can be discussed.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
04 Faculty of Medicine > Department of Haematology, Oncology, Infectious Diseases, Laboratory Medicine and Hospital Pharmacy (DOLS) > Clinic of Radiation Oncology |
UniBE Contributor: |
Aebersold, Daniel Matthias, Pajic, Bojan |
Subjects: |
600 Technology > 610 Medicine & health |
ISSN: |
1424-8220 |
Publisher: |
MDPI |
Language: |
English |
Submitter: |
Beatrice Scheidegger |
Date Deposited: |
17 Feb 2021 08:34 |
Last Modified: |
07 Aug 2024 15:45 |
Publisher DOI: |
10.3390/s21030975 |
PubMed ID: |
33540506 |
Uncontrolled Keywords: |
beta irradiation corneal aberrations pterygium |
BORIS DOI: |
10.48350/152234 |
URI: |
https://boris.unibe.ch/id/eprint/152234 |
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