ArticleArchives of Iranian medicine2024
Prevalence of Certain Corneal Conditions and their Demographic Risk Factors; Tehran Geriatric Eye Study.
Article in Archives of Iranian medicine, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Patterns and frequency of keratoplasty in corneal dystrophy at a tertiary eye hospital in Nepal.BMC ophthalmology · 2026Article
- Spatially selective multiphoton photothermolysis guided by reflectance confocal microscopy for precise vessel closure in the mouse eye limbus.Biomedical optics express · 2026Article
- Dry Eye Disease And The Jenvis Dry Eye Report Diagnosis Tool: A Literature Review with Emphasis On African Populations.Clinical optometry · 2026Review
- Efficacy and Safety of Topical Insulin Eye Drops for Corneal Epithelial Defects: A Systematic Review, Meta-Analysis, and Grading of Recommendations Assessment, Development, and Evaluation Assessment.Beyoglu eye journal · 2025Review
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Authors and funding
5 authors.
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Abstract
backgroundCorneal abnormalities are one of the important reasons for visual impairment. There is little evidence of the prevalence of different types of corneal abnormalities. The aim of this study was to assess the prevalence of various corneal abnormalities and identify the key risk factors associated with these abnormalities in an elderly population residing in Tehran.
methodsThe Tehran Geriatric Eye Study (TGES) was conducted as a cross-sectional study, utilizing a population-based approach and employing stratified cluster random sampling. The study focused on individuals aged 60 years and above residing in Tehran. An ophthalmologist performed a slit lamp examination to evaluate the eyelid, cornea, and crystalline lens.
resultsThe prevalence of posterior embryotoxon (PE), punctate epithelial defect (PED), pigment on endothelium (POE), corneal dystrophy (CDys), corneal vascularization (CV), and corneal degeneration (CDeg) were estimated to be 0.08% (95% confidence interval [CI]: 0.02 to 0.40), 8.77% (95% CI: 6.64 to 11.51), 0.57% (95% CI: 0.33 to 0.98), 0.53% (95% CI: 0.33 to 0.82), 0.95% (95% CI: 0.60 to 1.52), and 44.87% (95% CI: 41.80 to 47.98), respectively. Overall, approximately 49.08% of the participants exhibited some form of corneal abnormality in at least one eye. The multiple logistic regression model revealed that increasing age was significantly associated with PED, CV, and CD. Furthermore, illiterate participants had a significantly higher prevalence of PE.
conclusionThe findings of this study indicate that approximately half of the elderly population aged 60 years and above in Tehran have at least one corneal abnormality, with corneal degeneration being the most prevalent. Age was identified as the primary determinant of corneal abnormalities.
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