Adaptation en lentilles hybrides

Abstract

The hybrid lens is made up of a rigid gas-permeable central zone that offers optimal vision surrounded by a flexible border called a "skirt" that provides comfort. The two materials are polymerized and welded together using silicone molecules. The objective of this study is to know the adaptation protocol of this lens which is based on the pre-adaptation examination, the choice and the evaluation of the trial lens. At the beginning, a study of two cases is presented. Where we’ll show the different parameters to consider for prescription of lenses to these patients. Then, a statistical study of several patients was performed, each one of them as fitted with a hybrid lens. The majority of patients were intolerant to rigid gas permeable lenses due to the in comfort, having a regular cornea (high ametropia, astigmatism), or an irregular cornea (keratoconus) the other patients required unilateral wearing.