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Corneal
Topography Technique
1.
Perform corneal mapping or central and peripheral keratometry.
2.
Determine the radius of curvature 4.0mm from center along the temporal 180
degree meridian.
3.
Select a diagnostic lens that is closest to the temporal mid-peripheral
radius.
4.
Place the lens on the eye and evaluate the lens / cornea relationship with
fluorescein.
5.
Adjust the base curve in one diopter steps until the optimum fit is
determined.
6.
Perform an overrefraction to determine final lens power. |
