Journal of Practical Medical Techniques
Objective To study the diopteic siruation of the patients with senile cataract. Methods 159 patients with cataract(294 eyes)were examined using computet optometry,small pupil skiascipy,subject optometry and the lens opcity of them was observed under mydriatic condition.The vosual acuity the correted visual acuity and reflection condition of them were compared. Results Most of the patients with senile cataract have dioptric changing in different degree.The relationship between the types of the senile catarct and refractive error was stalitically corrdlated(P0.01).There was more hyperopia and hypermetropia astiymatism in the cortex cataract,there was mainly myopic and myopic astigmatism in the nudear cataract among these cataracts.The correecaed visual of the patients with cataract in the early and middle phase would be much better. Conclusion It reveals that the visual scuity decreasing in the ealy and middle phase cataracts is mainly caused by the changing of opacity iens dioptric situation.The visual acuity of the ealy phase can be corrected obviously.