OPD scan III

This is a test performed with advanced equipment that measure corneal topography with placid rings, corneal aberrometry, autorefraction with maximum accuracy, and pupillometry. It is very useful for evaluating patients for refractive surgery, multifocal and toric lenses, and for follow-up tests.

The patient should suspend the use of hard contact or gas permeable lenses at least 15 days prior to the examination, and the use of soft contact lenses should be suspended at least five days prior to the examination.