Perbandingan Besaran Sferikal Ekuivalen Berdasarkan Metode Pengukuran Visus Subjektif Dan Objektif Penderita Ametropia Pada Mahasiswa Fakultas Kedokteran Universitas Sam Ratulangi

Abstract

: Ametropia or refractive error of the eye is the case almost every time we encounter in our environment and increasing steadily each year. One of the factors why refractive error often are not fully corrected due to the difference in the value of spherical and cylindrical or spherical equivalent between the examination of subjective and objective visual acuity. This study aims to determine the difference of the results of subjective and objective visual acuity at patiens ametropia. Analytical research methods with cross sectional design. The subjects were taken from a population that is 40 people. Selected subjects who met the inclusion criteria ; suffering that can be in a correction of ametropia with refractive lenses, suffer ametropia in one eye or both and are willing to be examined. The results obtained are very significant differences in spherical equivalent subjective and objective examination of patients with abnormalities of refraction of-0.8D on the right and left eye of the subject. With more negative value of objective examination. By doing so required a certain effort of medical personnel to maximize the refractive examinations on patients in order to minimize the error correction of ametropia. Conclusion: There is differences in spherical equivalent subjective and objective examination