THE INTRODUCTION OF RETINOSCOPY WITH DOUBLE-DOOR ILLUMINATION / 西安交通大学学报(医学版)

ABSTRACT

The author's retinoscopy with a double-door type of illumination is presented in this paper. It is an objective method for the measurement of refractive errors by using an elect ic retinoscope. Spherical lens are used to neutralize the illumination from the pupil of the Patient u til the size, intensity and rapidity of movement of the double-door illumination from the pupil becomes almost identical. When a lineal back slit srace has been revealed in the middle of the double-door illumination, with a point of re(?)lex light on the center corneal surface, the neutral point is determined. The main points of using this method are also discussed in this paper.