What causes blindness is an important topic to discuss as far as Australians are concerned. Many people in Australia tend to ignore various factors that may lead to complete loss of vision. Some of the leading causes of blindness include: diabetes, traumatic injuries, herpes simplex virus, and eye diseases such as glaucoma, retinitis pigmentosa, cataracts and macular degeneration. Blindness may affect one eye or both eyes and may not cause total darkness since some people who are blind can see shadows and some beams of light.

What causes blindness in most people begins with an eye disease that advances into complete vision loss. Cataract is a clouding of the eye lens that makes an individual’s vision to be blurred and it develops a problem of seeing through glare. It is known to be the leading cause of blindness all over the world if left untreated. Individuals who have the following symptoms (bury vision, glare, and double vision) are unable to see well at night as well as perceive faded colours; ideally, such people are advised to seek treatment. Glaucoma is an eye problem that deteriorates the optic nerve, this causes fluid build up and increased eye pressure. It leads to gradual loss of the peripheral vision. It is also a leading cause of blindness and immediate treatment after diagnoses is important.

What causes blindness in many adults is an eye condition known as macula degeneration. This eye disorder is mainly associated with aging and it damages the macula. Macula deterioration leads to loss of the central vision system and blurred vision arises. Diabetic retinopathy is an eye disease that is caused by diabetes. It mainly affects blood vessels that nourish the retina and it causes leaking hence vision loss. Retinitis pigmentosa is an eye problem that begins during childhood and the infected person becomes blind at adulthood. Individuals with this eye disease have a problem of perceiving objects at night.