POST SURGERY LENSES

Fitting the 10.4 Diameter Post Graft & Post Graft Floating OZ Design

1. Regardless of the central keratometry, place on the eye a 10.4 Post Graft lens with a base curve of 44.00 D (7.67mm).

2. Evaluate the lens/cornea relationship with fluorescein.

3. Adjust the base curve in one diopter steps until the optimum fit determined. (If uncertain, it is best to observe a lens which is flatter than acceptable and one that is steeper than acceptable to determine a range of possible base curve options).

4. Perform an overrefraction to determine final lens power. 

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.