Adaptación de LC asférica de alta excentricidad modificada en queratocono unilateral

Abstract

Purpose: To describe a modified aspheric rigid contact lens fitting in one case of unilateral keratoconus in a 17-year-old male patient, with a history of unsuccessfully spherical and soft perm contact lens fitting. Case Report: Based on ocular examination, the patient was diagnosed as having unilateral keratoconus in the right eye with a paracentral inferior 51.89 D cone. A first gas permeable contact lens with an aspheric design (e = 0.6) shows an inadequate comfort and tight three point touch relationship with a worst fit patterns using flat designs. With a new aspheric gas permeable contact lens (e = 0.9) the patient was able to achieve 0.900 acuity with an adequate three point touch pattern but not very good comfort. Finally, an edge polishing process is used successfully to increase ocular comfort. After six moths of contact lens fit the patient show good comfort with no less than six hours per day and no complications. Conclusions: With the contact lens currently available and different fitting techniques, contact lens appear as the best solution before surgery possibilities. Sometimes modification of the CL may be necessary to get a successful fitting.