Saifullah, Sadiqullah, Mutahir Shah, Komal Inam, Farah Amin.
Assessment of Inter-pupillary Distance Amongst age group of 15-75 years Visiting Eye OPD at Hayatabad Medical Complex, Peshawar.
Ophthalmol Update Jan ;16(3):817-20.

Aim: To determine the Inter-pupillary distance (IPD) among patients age group 15 to 75 years visiting Out-patient department Ophthalmology Hayatabad Medical Complex Peshawar and to compare the difference between male and female IPD. Materials and Methods: A Hospital based cross-sectional descriptive study in which a total of 100 subjects were recruited from an Outpatient Ophthalmology department of Hayatabad Medical Complex Peshawar, using systemic random sampling and every 3rd patient in the selected age group, who is permanent resident of Peshawar, was taken. Distance and Near IPD were measured using a Pupillometer (NPi-200 Neuroptics) a gold standard technique and with Auto-refractometer (RM.8800 Auto-refractometer, Topcon, Tokyo, Japan).Each measurement was done thrice and the average was taken. Results: A total of 100 subjects aged 15 to 75years, which includes 50(50%) males and 50(50%) females. The mean IPD of all 100 subjects are 62.32+/-3.67 (95% Confidence Interval 61.33-63.31), with mean IPD and standard deviation of 63.66+/-3.70 and 60.99+/-3.60 for males and females subjects respectively. The overall mean age was 38.93 SD +/-15.92 (39 SD +/-16 years for male subjects, 38SD 15years for female subjects).The FIPD and NIPD for all the study subjects were 62.66 +/-3.69 and 60.13+/-3.10.when stratified among different age groups the mean IPD and standard deviation for all the study subjects were 61.30 +/-3.55, 62.05+/-3.53, 62.60+/- 3.60 and 63.35+/-4.16 for 15-30years, 31-45years, 46-60years and 61-75years respectively. Conclusions: It was concluded that IPD varies among different age groups, also statistically significant difference exist between male and female IPDs (P=0.014).

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