Adaptación de lentes toricas, en paciente femenino de 23 años de edad con miopía patológica.

Myopia is a refractive error that manifests itself when the patient perceives distant objects as blurry. Myopia is due to the image being formed in front of the retina, either because the cornea or the crystalline lens or both are too powerful, or because the eye is longer than normal. Myopia is corrected with negative diverging lenses, either glasses or contact lenses. Astigmatism is a common and usually treatable imperfection in the curvature of the eye that causes blurred distance and near vision. It is usually due to an alteration in the anterior curvature of the cornea. The cornea is the transparent region at the anterior pole of the eye that acts as a lens through which light passes and is focused onto the retina at the back of the eye. The surface of the cornea should be symmetrical and regular in its curvatures, otherwise astigmatism occurs. Astigmatism is common in the human eye to a greater or lesser degree and is usually associated with myopia or hyperopia. It can be corrected by the use of cylindrical lenses. Magna myopia, or pathological myopia, is considered a state of excess power of the eye's optical system. That is why pathological myopia is characterized by progressive elongation of the anteroposterior axis of the eyeball causing excessive stretching of the posterior pole and its layers affecting the sclera, choroid, retina and optic nerve head, which in turn leads to degenerative changes associated with such elongation, with myopic mucolopathy being the most frequent cause of vision loss. High myopes are more at risk for ocular pathologies such as cataract, glaucoma, retinal detachment and myopic macular degeneration. This disease, which can increase in adulthood, has a high hereditary component that progresses over time and is characterized by little improvement in visual acuity, despite the use of prescription glasses. The younger the person is, the more influence he/she has to suffer from myopia, that is why the present clinical case has as objective the adaptation of toric lenses, in a 23 years old female patient with pathological myopia combined with astigmatism. The young girl presents genetic and environmental risks that may favor this increase. High myopia is associated with a higher risk of presenting serious ocular alterations, so we consider it important to carry out a method to control its progression. In this case we show optometric tests performed and the adaptation of toric lenses.

• Үндсэн зохиолч: Varas Palma, Suanny Mayling (author)
• Формат: bachelorThesis
• Хэвлэсэн: 2022
• Нөхцлүүд: Patología; Miopía; Astigmatismo; Lente Tórico; Refracción
• Онлайн хандалт: http://dspace.utb.edu.ec/handle/49000/11872