Dokładność badania refrakcji oka metodą skiaskopii statycznej
The Accuracy of Static Retinoscopy in Refractive Error Examination
Summary: Purpose: To evaluate the accuracy of static retinoscopy comparing to the subjective refraction. Material and Methods: 100 patients in various age were studied. Static retinoscopy was carried out in 100 persons without cycloplegia and in 33 persons following cycloplegia. The examined group was classified in 5 subgroups according to their age. The age range was 19 to 81 years. Results: The results of subjective refraction were compared with static retinoscopy results. A comparison of the subjective refraction and static retinoscopy results, shows that for spherical equivalent the mean error of static retinoscopy without cycloplegia and after cycloplegia was the same and equal to 0.18 D. For 33 individuals in whom we used 1.0% Tropicamid sol., static retinoscopy, when performed without cycloplegia, appeared to be more accurate in comparison to the retinoscopy after cycloplegia. The mean error (in this group) for retinoscopy without cycloplegia was 0.15 D and for retinoscopy after cycloplegia was 0.18 D in comparison to the subjective refraction. Conclusion: 1. Static retinoscopy is very accurate method and is very useful in refractive error evaluation. 2. In 33 adult individuals (in whom we used 1.0% Tropicamid sol.) static retinoscopy without cycloplegia was more accurate method than retinoscopy performed after cycloplegia. 3. In some cases of low vision, non-cooperate patients or children, retinoscopy results can be used for prescribing spectacles. 4. Retinoscopy results can be a very good starting point for subjective refraction.