The 3 images below are of the same eye. 20 years ago this eye underwent corneal transplant surgery. For many years this patient was unable to obtain functional vision with this eye due to a high degree of corneal distortion. 3 years ago, in an effort to make the corneal more spherical, her corneal surgeon decided to perform a modified RK surgery on the transplanted cornea. The result of this RK procedure was continuous pain along with a decrease in the patient’s visual acuity. In the first image below, you can see the open RK incisions. A special green dye and filter were used to make this easier to see. In the 2nd photo, which is a profile view, you can see the open RK incision in the lower portion of the transplanted cornea. The 3rd image is a cross section of this cornea taken with a technology known as “Optical Coherence Tomography”. The top 2 curved lines represent the front and back surfaces of the scleral lens. The thick curved grey structure below the scleral lens is the transplanted cornea. Look carefully to the left side of this image and you can see the open RK incision that extends half way through the cornea. With this scleral lens the patient is able to see clearly and comfortably for the first time in 20 years.