There are many infections which can affect the eyes. Some are more common such as conjunctivitis and some may occur as a result of other infections in the body such as shingles.
A squint causes the eye to appear to turn inwards and is often due to weakened muscles or as a consequence of some childhood illnesses. Repairs may or may not involve the use of surgery.
Age related macular degeneration affects older people but has a devastating impact when it leads to blindness, particularly when sight is lost suddenly.
Many people don't ever think about an eye test but getting your eyes checked out once a year is a good idea. Ask yourself if you need an eye test.