Astigmatic Refraction Measurement With Eccentric Photorefraction — Some Theoretical Considerations —

Abstract

Eccentric photorefraction is an objective refraction technique which allows determination of refractive errors in human eyes from a distance of typically 0.5 — 5 m. It is used as an early diagnostic test in infants and small children (Bobier and Braddick [1], Kaakinen, Kaseva and Teir [2], Angi and Cocchiglia [3], Hamer et al. [4]) as well as in animal models of myopia (Schaeffel and Howland [5]).