Subjective Interpupillary Distance of Measurement Technique

In this paper, a new optical technique, two movable slit plate modules and the subjective optometry method was developed to examine Interpupillary distance. The evaluation of binocular vision are dependent on the three-dimensional structure of natural scenes. The eye position and the fusion image of the eyes are fine-tuned and the alignment is assured by through the vision of subject with the trial frame and a movable slit plate module after full optometry correction procedure. This novel method is to success and replace of new optical lenses, the error of prismatic imbalance estimated has an accuracy of 0.12(Delta). It also changes the refraction test from an objective method to a subjective method in order to meet the subject's most comfortable binocular visual fusion.