Astigmatism
In astigmatism occurs a combination of different types of eye refraction or different degrees of refraction. That is, in one eye may be combined effects of myopia and presbyopia varying degrees.
Anatomy of the cornea
Cornea is front convex, transparent, avascular plate of the eyeball, which is direct continuation of the sclera. Human cornea is approximately 1/6 of the outer layer of the eye.
Сongenital cataract
Congenital cataracts cover a broad spectrum of severity: whereas some lens opacities do not progress and are visually insignificant, others can produce profound visual impairment.
