However, although eye structures look perfectly normal on the eye anatomical model, it is not always perfect. For example, the cornea is a two-sided structure, rather than a flat one. This means that the light rays enter the eye through the middle and exit through the side nearest the eye. However, the eye structure does not follow this pattern everywhere. The eye structure varies from one person to another.
Eye disease is the main problem that causes vision loss and is responsible for more than 25% of vision impairment. The majority of vision loss occurs in elderly people with cataracts. If the disease is not treated, it gradually leads to loss of vision. Many eye diseases have no symptoms at all but we rarely notice any changes in our eyes as they gradually worsen over time. It is therefore important that eye doctors monitor any changes in our vision and prescribe treatments if necessary. However, most eye diseases do not have any symptoms... Read more