Reporte de Caso: Adaptación de Lentes de Geometría Inversa en Paciente con Cornea Irregular Posterior a Múltiples Cuerpos Extraños

Abstract

The adaptation of rigid gas permeable contact lenses has become a correction alternative that provides visual improvement in cases of irregular corneas, they are usually used in corneal ectasias or other alterations within which keratoconus is mainly found, however said This resource can also be used in cases where there is a change in corneal geometry, however, difficulty could be evident in the positioning and tolerance of the contact lens due to the choice of spherical designs; This situation denotes the importance of exploration in other types of designs such as inverse geometry designs. Below, we present the case of a 56-year-old patient with a mechanical profession who attends consultation reporting poor distance and near vision that does not improve with glasses, presence of several corneal leucomas and scissor shadows accompanied by a very irregular topographic pattern. A test was carried out with rigid gas permeable contact lenses of spherical design, finding a significant improvement in visual acuity but with significant difficulties during adaptation such as lens decentration and excessive lifting of the edges accompanied by discomfort on the part of the patient, for example. Therefore, a change in the design is made to one of reverse geometry, achieving a vision of 20/33 in each eye and 20/25 binocularly. This demonstrates the importance of knowledge and management of unconventional contact lens designs that can help improve fits.