Skiaskopia is a method of definition of clinical refraction of the eye. The study is the eye of the mirror at a distance of 1 m from the patient under the same conditions as ophthalmoscopy (see) in the opposite view. When covering the eyes of a light beam reflected from the eye of the mirror, there is an even glow of the pupil reddish light. A small rotation of the mirror changes the nature of the glow of the pupil - the emergence of a movement of the shadow in a particular direction coincides with the direction of rotation of the mirror or the reverse. Because the position of the shadow and the direction of its motion depend on the refractive investigated eyes, it is possible to judge of myopia, hyperopia or normal refraction (emmetropia), and astigmatism. For a precise definition of refraction of the eye are sciencephase rulers, consisting of a set of convex and concave lenses of different refractive power. To identify the degree of refraction use method for the elimination of the shadows bring the investigational eye skiaskopia line (with myopia with negative lenses, adding to the strength of glass 1,0 D as an amendment to a distance; hyperopia with positive lenses, taking 1,0 D to the amendment).
Skiaskopia is of great importance both accurate and objective method of the study of refraction of the eye (see), especially important in the selection and examination of work capacity.