Background and purpose : Basal cell carcinoma is the most common malignancy of the eyelids and is frequently misdiagnosed.Materials and methods : The diagnostic accuracy and index of suspicion of basal cell carcinoma of the periorbital region for ophthalmologist were calculated by Lightstones method. Data were analyzed retrospectively from the pathology records at the Kerman Medical Sciences University.Results : The diagnostic accuracy and Index of suspicion were 72.7 % and 87.8 % .Conclusion : Diagnostic accuracy for ophthalmologist was comparable with other studies but the Index of suspicion was lower than other studies and must be improred.