Background: To study the prevalence of trochlear calcification in orbit.
Material and methods: Computed tomography scan reports of 220 patients were collected retrospectively for the presence of trochlear calcification. Data were categorised according to their age, sex-specific personal history and history of systemic illness or ocular disease.
Result: Out of 220 scans collected only 37 (16%) patients showed trochlear calcification. The males showed more predominance in comparison to the females. The maximum number had a history of ocular trauma while very few had specific ocular complaints like thyroid disease or vascular malformation. No specific association was seen with age or systemic illness like diabetes mellitus, or hypertension.
Conclusion: Trochlear calcification is a benign condition with a typical location and morphology and can be inadvertently diagnosed as a foreign body or as an indication of underlying medical pathology.
Key words: Trochlear calcification, CT scan
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