Various hard contact lens fitting techniques were filmed in color and analyzed. The topics studied were the following: l. changes in Base Curve (BC) with all other parameters held constant, 2. changes in Overall Diameter (OAD) with all other parameters held constant, 3. changes in Optic Zone Diameter (OZD) with all other parameters held constant, 4. effect on tear fluid exchange when the Peripheral Curve Radius (PCR) is widened, 5. the observation of the fluorescein pattern on a highly toric cornea. This film is to be used as an instructional aid for second ·' year contact lens students at Pacific University College of Optometry.
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