Refractive Errors, Corneal Power, and Far and Near Visual Acuity in Cancer Patients
Journal of Ophthalmic and Optometric Sciences,
Vol. 8 No. 3 (2024),
12 July 2024
,
Page 22-34
https://doi.org/10.22037/joos.v8i3.46978
Abstract
Purpose: To determine visual acuity, central and peripheral corneal power, and the prevalence of refractive errors in cancer patients from Imam Hossein Medical Center, Tehran, Iran.
Patients and Methods: In this cross-sectional, population-based study, cancer patients were examined for far and near visual acuity (VA), refractive errors, central and peripheral corneal power, and near addition. Data analysis was performed using SPSS version 22 software.
Results: Data were collected from 330 eyes of 165 patients. The mean age was 54.26 ± 13.39 years (range: 18-86 years). The prevalence of hyperopia, myopia, and astigmatism was 30.3 % (95 % confidence interval [CI]: 25.5-35.5 %), 27 % (95 % CI: 22.1-31.8 %), and 80.3 % (95 % CI: 76.1-84.5 %), respectively. The mean uncorrected and corrected distance visual acuity (VA) was 0.29 ± 0.36 logMAR (95 % CI: 0.25-0.33) and 0.07 ± 0.21 logMAR (95 % CI: 0.05-0.09), respectively. The mean uncorrected and corrected near VA was 0.51 ± 0.32 logMAR (95 % CI: 0.47-0.54) and 0.04 ± 0.19 logMAR (95 % CI: 0.017-0.06), respectively. The mean near addition was 1.73 ± 0.93 D (95 % CI: 1.63-1.84). The mean central and peripheral keratometry values were 44.20 ± 1.54 D (95 % CI: 44.03-44.37) and 44.17 ± 1.50 D (95 % CI: 44.00–44.34).
Conclusion: The prevalence of refractive errors in this study was higher than in most previous reports and increased significantly with age. Based on our results astigmatism was the most common refractive error in cancer patients, followed by hyperopia and myopia.
- Refractive Error
- Visual Acuity
- Cancer
- Keratometry
How to Cite
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