The juvenile or adult cataracts may be due to aging, exposure to X-rays, infrared radiation heating, systemic diseases (eg., Diabetes mellitus), uveitis, systemic medications (eg., Corticosteroids) and possibly ultraviolet exposure chronic.
Symptoms and signs
The main symptom of juvenile or adult cataracts, vision loss is gradual, painless, whose degree depends on the location and intensity of opacity. When the opacity affects the central nucleus of the lens (nuclear cataract) appears myopia in early stages, so the presbyopic patient discovers he can read again without glasses (second sight). Rarely cataract swells, causing pain and secondary glaucoma. Opacities below the posterior capsule (posterior subcapsular cataract) affect the vision to overly opacity located at the point of intersection of the rays of light from the objects. The falls create problems especially when illumination is highest.
