NCLE Prep Exam 3 of 4 Questions and Answers Already Graded A
The tolerance for the overall lens diamter according to the ANSI standards is: A. +/-0.005mm B. +/-0.05mm C. +/-0.01mm D. +/-0.1mm -AnswerB. According to the ANSI standards (Z80.2-1989), the tolerance for the overall diameter of a contat lens is +/-0.05mm. ANSI standards have been developed to maintain quality in the contact lens industry. It is important to have an understanding of the ANSI guidelines. All of the following will enable the practitioner to verify the overall rigid gas permeable lens diameter except: A. Slot gauge B. Shadowgraph C. Measuring magnifer D. Radiuscope -Answer D. Radiuscope
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