Что такое амниотическая мембрана Амниотическая мембрана представляет собой полупрозрачную аваскулярную ткань, которую производят из плаценты. Она выделяется в строгих условиях стерильности после родов и обрабатывается в банке тканей, аккредитованном органом здравоохранения. Амниотическая мембрана может иметь формат криоконсервированного листа, который может быть имплантирован в глаз после размораживания, или в виде лиофилизированного порошка, который после приготовления в стерильных условиях можно использовать в…
What is it? The main function of the eyelids is protecting the eye from external agents (excessive light, foreign bodies, etc.) and distributing tears on the eyeball. But we should not forget that they also play a key role in facial expressions and aesthetics. Over time, the tissues around the eye age, the skin becomes loose and tends to fall,…
What is it? Keratoconus is one of the most common degenerative diseases of the cornea. It is the slowly progressive thinning and deformation of the corneal tissue. It is usually detected in young people starting from puberty, and tends to progress for decades, usually stabilizing after 30 years of age. It may be associated to a large number of local…
What is a cornea transplant? The cornea is a thin transparent membrane that covers the front portion of the eye, in front of the iris and pupil. It plays numerous roles: as a transparent window of the eye it lets the images pass and acts as a powerful lens to focus them on the retina. The retina is a nervous…
What is it? Retinal detachment is the separation of the neurosensory retina from the underlying tissue (retinal pigment epithelium), caused by the accumulation of fluid between the two. There are three mechanisms that can cause retinal detachment. The rhegmatogenous type, which is the most common type, is caused by a retinal tear that can occur after a vitreous detachment. The…
What is it? Glaucoma is defined as an irreversible optic nerve disease which may be due to several causes, and whose most important risk factor is elevated intraocular pressure (IOP). The importance of this disease is evident, as is the second cause of blindness in developed countries. We speak of glaucoma when we find that the optic nerve is affected…
What is it? This condition occurs in the lens, the natural lens inside the eye that allows focusing near and far objects. The lens becomes opaque and loses its transparency, both naturally and due to aging. The images become cloudy and, as it progresses, we lose visual acuity. Symptoms The glare of sunlight, lamps or headlights of cars at night…
What is it? It is a refractive defect (ametropia) which causes the eye to be unable to form a clear image from an object, because the power of the optical system varies between the principal meridians; the higher and lower power. The main cause is usually lack of corneal symmetry (toricity). Also, there is a degree of toricity in the…
Что это такое кератопротез Кератопротез – это искусственная роговица, помогающая восстановить зрение в ситуациях, когда глазная поверхность поражена настолько, что обычная пересадка роговицы не дает положительного эффекта. Идея довольно проста: это как прорубить новое окно в стене дома и получить возможность увидеть сквозь него красоту окружающего мира. Одним из наиболее часто используемых кератопротезов является Бостонский кератопротез / Boston Keratoprosthesis implant…
What is it? Myopia is an alteration in refraction, in which distant objects are focused in front of the retina instead of on it. This causes the vision of such objects to appear blurred Symptoms Symptoms vary for myopia, but the blurring caused when trying to focus on distant objects is most prominent. This causes the image of such objects…