Date of Award
Master of Science in Vision Science
Niles Roth, O.D., Ph.D.
Paul Kohl, O.D.
This is an experimental study of a photoretinoscopic apparatus based on the Badal optometer principle. The experimental set-up consisted of a two-element object array, +13.375 D input lens, +1.875 D intermediate lens, and +2.00 D output lens. An emmetropic human eye analogue was used to test the accuracy of the apparatus. One of the image sizes in the eye analogue was 20% larger than the other showing some departure from the Badal configuration, possibly due to errors in setting up optics for confocal relations. There is also a need for greater flux uniformity of the light source, and better quality lenses, so as to reduce aberrations, thereby enhancing resolution.
Lim, Helen O., "A continuing study on the feasibility of a Badal-type photoretinoscopic apparatus" (1991). College of Optometry. 973.