OEBC OSCE Component Practice Questions - Optometry Examining Board Of Canada Entry-to-Practice Examination - OSCE Component Exam

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A 22-year-old rigid gas permeable (RGP) contact lens wearer exhibits an apical clearance fluorescein pattern ('steep fit') with central fluorescein pooling under the lens. How should the RGP lens parameters be modified to achieve an alignment fit?

Flatten the base curve (increase base curve radius in mm) Steepen the base curve (decrease base curve radius in mm) Increase the overall lens diameter by 2.0 mm without altering base curve Add 1.00 D of prism ballast

Correct Answer:

Flatten the base curve (increase base curve radius in mm)

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