Normative values of Pelli Robson contrast sensitivity test in southeast Iran: A tropical area

Introduction: This study aimed to evaluate the distribution of contrast sensitivity (CS) using Pelli Robson test in normal individuals over seven years old living Zahedan and examine its relationship with age, gender, refractive errors. Methods: In this cross-sectional study, simple sampling was performed on patients aged their attendants who had referred Al-Zahra eye hospital Zahedan. Complete ophthalmic examinations including vision refraction assessment, biomicroscopy, CS evaluation were carried out for all subjects. To CS, chart used at a distance one meter. The logarithmic value last triplet which patient could accurately read two words regarded as his/her value. Results: Of 150 (300 eyes), 70 (46.66%) male. mean age subjects 34.56±16.15 (ranged from 78 years). standard deviation score modes monocular binocular 1.45±0.19 1.57±0.19 log unit, respectively. not significantly different between men women (P>0.454), but it decreased (P=0.000). higher emmetropia than those myopia hypermetropia There also significant correlation cylinder magnitude Conclusion: Although evaluates low constant spatial frequencies, is among groups even values