What is a Successful Keratoconus Lens?
The criteria for a successful keratoconic lens fit is no different than it is for a standard successful RGP lens fit. The lens needs to be comfortable, wearing time should be all waking hours (if possible) and vision needs to be acceptable, as does the post-wear biomicroscopy. However, achieving these criteria can be quite a challenge. Vision for the keratoconic patient may not be 20/20 even with contact lenses. If the vision is satisfactory for the patient’s needs, then you have satisfied the first requirement. The health of the cornea is also of prime importance, and of course, may relate to wearing time. Some practitioners feel that a poorly designed lens can cause scarring and facilitate the disease. Then again, even with no lens wear, keratoconus is a progressive disease. The optimum cornea-lens relationship continues to be debated: Is apical bearing or apical clearance the ideal fit? Total alignment would be best, but only in very rare instances can this be obtained. In my opinio
