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There are several other conditions that can affect the eye including:
The optic nerve transports visual information from the eye, to an area of the brain where it is processed. Optic atrophy is the result of worsening or damage to the optic nerve.
Optic atrophy is a condition which may be passed down through family, or may result from an injury to the brain, or conditions such as brain trauma, swelling, degenerative disorders, bruising or tumour. It can develop over time or not change at all, depending on the cause of the damage.
The optic disc is the portion of the optic nerve visible when looking into the eye. A pale coloured optic disc is a clinical sign of optic atrophy.
Vision loss will be different depending on how serious the damage. Due to the nerve damage, optic atrophy is not reversible and therefore cannot be treated. However, in some situations the cause of the damage may be treatable.
Gonococcal conjunctivitis is a highly infectious, painful and sight-threatening condition caused by a type of bacteria . Symptoms include intense swelling of the eye and discharge.
This type of bacteria is usually passed between people through sexual contact, but it can also be passed by non-sexual contact. It only survives in warm, moist conditions and dies rapidly in a dry cold atmosphere.
Medical tests are needed to see if a person has the disease and antibiotics are used for treatment.
A pterygium is a triangle-shaped thickening in the inner corner of the eye. It does not produce many symptoms, but in some cases the eye may become red and inflamed. A pterygium can grow over the iris (the coloured part of the eye) and can damage eyesight if it extends over the pupil, through which light has to pass to the retina on the back of the inside of the eye.
It is likely that a pterygium is caused by exposure to the sun and affects people who live in the warm, dry regions of Australia, and people who spend most of their time outdoors. Other reasons include:
The pterygium may be removed by a doctor or ophthalmologist if it grows towards the edge of the pupil or affects the vision.
As people get older they can develop macular degeneration, which is damage to the macula (a small part of the retina) that helps a person see fine details. It is a disease that affects the centre of the field of vision, and is a common reason for poor eyesight in people aged 60 years or older.
In the general population, two out of three people will develop age-related macular degeneration (AMD) and one person in four will go blind.
Getting older and people with a family history are more likely to develop macular degeneration, as well as people who smoke cigarettes.
Symptoms for macular degeneration include:
Low vision aids and support services are available for people with macular degeneration. In some cases it is treated with an injection to the eye, however, there is currently no effective treatment for macular degeneration.
Glaucoma is a condition that leads to poor drainage of the clear liquid that normally flows in and out of the front section of the eye. This causes increased pressure that can damage the nerve cells and lead to loss of eyesight. The symptoms are usually not noticeable to the person affected until damage has been done to eye.
The most common forms of glaucoma increase with age. Unfortunately, half of people with glaucoma do not know that they have the disease and do not receive treatment. Without treatment, people can lose vision and once this vision is lost it cannot be restored. A family history of glaucoma increases the risk at least four times. People with glaucoma need to tell their brothers, sisters, sons and daughters (first-degree relatives) about their family risk of developing glaucoma. People who have a family history of glaucoma need to have their eyes checked regularly. Glaucoma is not common among Aboriginal and Torres Strait Islander people.
To see if a person has glaucoma, an optometrist or doctor examines the eye’s nerve fibres and drainage network and measures eye pressure (using an instrument called a tonometer). If it is detected early enough, treatment can slow down or stop further vision loss, but cannot restore vision already lost.
Glaucoma is treated by reducing pressure in the eye. Other common treatments include droplet medication, laser treatment, and surgery.
Pseudoexfoliation syndrome is a general eye problem which features the production and build-up of fibrillar material (white, flaky material) over the lens and front surfaces of the eye.
Pseudoexfoliation syndrome is associated with getting older, high pressure in the eye, and secondary glaucoma, but can include genetics (family history) and environmental influences, such as where you live.
Pseudoexfoliation syndrome can usually be seen on slit-lamp examination and be treated with medications or laser treatment.
Ocular trauma (injury to the eye) can occur in many different places such as at work, at home, or playing sport. It can also occur from violence and alcohol abuse. Common injuries to the eye include:
Eye-related head injuries are more common among Aboriginal and Torres Strait Islander children compared with non-Indigenous children. Injury to the eye can also lead to a higher risk of developing cataract.
Centre for Eye Research Australia (2013) Age-related macular degeneration. http://www.cera.org.au/uploads//pdf/FS__AMD.pdf
Centre for Eye Research Australia (2012) Glaucoma. http://www.cera.org.au/uploads//pdf/FS_Glaucoma.pdf
Christopher P. Majka, MD, and Pratap Challa, MD Edited by Ingrid U. Scott, MD, MPH, and Sharon Fekrat, MD (2013) Diagnosis and Management of Pseudoexfoliation Glaucoma. EyeNet Magazine. American Academy of Ophthalmology. http://www.aao.org/publications/eyenet/200606/pearls.cfm
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Taylor HR (1997) Eye health in Aboriginal and Torres Strait Islander communities. Canberra: Commonwealth Department of Health and Family Services
Biotext (2008) Risk factors for eye disease and injury: literature review. Canberra: National Health and Medical Research Council, Australia
Australian Institute of Health and Welfare (2008) Eye health among Australian children. Canberra: Australian Institute of Health and Welfare
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