glaucoma. what is glaucoma? glaucoma is a degenerative disease of the optic nerve in its most severe...
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Glaucoma
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What is Glaucoma?
• Glaucoma is a degenerative disease of the optic nerve
• In its most severe form, glaucoma can result in tunnel vision or blindness
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The optic nerveThe function of the optic nerve is to transmit information
from the eye to the brain
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Normal retina
Optic nerve
Blood vessel
Macula
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Damage to the optic nerve
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Detecting Glaucoma
• The pressure inside the eyeball may be higher than normal
• This is extremely difficult to detect yourself
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Main risk factors for glaucoma
Age: over forty
Family history: siblings, parents
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Tests for glaucomaTONOMETRY
Measures the pressure
inside the eyeball by
• Non-contact tonometry
– a puff of air
• Contact tonometry
– usually involves the use of drops
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Tests for glaucoma
OPHTAHLMOSCOPY
• Use of a bright light to examine the retina
• Appraisal of the optic nerve head
– colour
– shape
– cup in centre
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Tests for glaucoma
VISUAL FIELD TEST
Usually a computerised test
• Lights are shone in central and peripheral field
• A button is pressed when they are seen
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Treatment for glaucoma
• Medications
• Surgery
• Regular monitoring
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Early detection and treatment is vital• Once vision is lost from glaucoma it
can’t
be restored
• It is often hard to notice any changes in your peripheral vision until they are advanced
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An eye examination every two years is recommended
Anyone over forty
AND
Anyone with a family history of
glaucoma
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Optometrists• Provide a comprehensive visual
examination
• Detect and diagnose eye health problems
• Prescribe and supply glasses and contact lenses when required
• Diagnose and treat eye coordination and focussing problems
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To find an optometrist
• Optometry Australiawww.optometry.org.au
• Yellow Pages