Analysis and calculations of decentration amount and prism in eyeglass lenses

The error of refraction is a very common eye disorder. Untreated vision problems put lot burden on the global economy annually. One most important parameters in correct treatment visual defects assembly focal point glass. study was carried out to reveal decentration differences and analysis prism formation after glass according prescriptions 150 customers who came an optical shop Eskisehir Saturdays, 2015-2016. A digital lensmeter used for measurement glasses, photographic pupilmeter measure pupillary distances. Chi-square test frequency study, numbers were Marginal Homogeneity Test accuracy data. Glass assemblies without achieved at rate 94.66% distance glasses 93.33 % near glasses. When errors made applied physics are analyzed, amount that frequently daily life draws attention. In this case, it caused unwanted formation.