PMID: 29783210May 22, 2018Paper

The effectiveness of sphero-cylindrical correction at a short distance in presbyopic age patients with the first detected astigmatism

Wiadomości lekarskie : organ Polskiego Towarzystwa Lekarskiego
Iryna M BezkorovaynaAnna O Bezkorovayna

Abstract

Introduction: The practical results of optical correction without considering the cylindrical component at close dictance do not always satisfy the patient in everyday visual activity. The aim: Compare the effect of sphero-cylindrical and spherical correction in presbyopic patients with the first detected astigmatism at a close distance work. Materials and methods: The article presents the results of a survey of 43 patients (86 eyes) aged 38 to 59 years, on average 47 ± 0.8 years. In all patients, weak astigmatism with a cylinder (Cyl) of 0.5 D to 1.0 D was found. At the diagnostic stage all patients were offered a variant of spherical and sphero-cylindrical optical correction, the data we obtained formed two groups of comparison. Results: The average value of visual acuity at close distance (33 cm) in patients with spherical correction was better - 0.95 ± 0.06 (73 ± 1.4 optotypes) compared with spherocylindrical correction - 0.61 ± 0.02 (64 ± 0.8 optotypes). The mean distance (66 cm) is better in patients with sphero-cylindrical correction - 1,58 ± 0,01 (70 ± 0,02 optotypes) compared with spherical correction - 0,8 ± 0,05 (55 ± 1,0 optotypes). Also, when using spherical correction, the nearest point of clear vision was closer ...Continue Reading

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