Comparison of Autorefractometer, Retinoscope and Subjective Method in Myopic and Hypermetropic Patients
Journal Title: International Journal of Contemporary Medical Research - Year 2017, Vol 4, Issue 3
Abstract
Introduction: Automatic refractors have become more important in recent years because of the busy clinical schedule of ophthalmologists and increasing faith of patients in sophisticated mechanical devices. The present study was undertaken to compare the results of autorefractometer testing, retinoscopy and subjective refraction testing using cycloplegia in in myopic and hypermetropic patients. Material and Methods: The present study comprised of 100 binocular patients who reported for refractive problems. Patients were examined by both the methods i.e. by objective refraction testing (autorefractometer testing and retinoscopy) and subjective refraction. The results were compared and statistical analysis was carried out using Chi-square test with p≤0.05. Results: The present study observed that in hypermetropic patients, while calculating calculating spherical error under cycloplegic conditions, AR readings do not correlated with RE and SB whereas retinoscopic findings were correlated well with subjective correction. In hypermetropes with the excessive use of accommodation at the time of refraction refractive error values get altered where as when we use cycloplegic accommodation relaxed and correct refractive error can be determined. In myopic patients there was no significant difference of mean and standard deviations values between all the three parameters by using autorefractometer, retinoscopy and subjective method after using cycloplegic. Conclusion: Autorefractometer is an invaluable aid for screening large number of cases in busy ophthalmological clinics. Manual retinoscopy is still the most accurate technique to estimate refractive status and gives better starting point for subjective refraction.
Authors and Affiliations
Anita Ganger, Saroj Bala, Inderjit Kaur, Prempal Kaur, Satpal A
Keywords
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