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This literally means a blockage of a major vein of the retina. This can lead to:
- Leakage of blood and fluid into the retina. Vision is reduced if the macula is involved.
- Disrupted blood supply (“Ischaemia”) to the macula
- If Ischaemia is widespread, it can lead to growth of small fragile retinal blood vessels to overcome the lack of oxygen. These can bleed into the eye leading to floaters and reduced vision.
– Blurred or reduced vision
This literally means a blockage of the major vein of the eye.
This leads to leakage of blood and fluid into the retina. If this involves the macula, then vision is
In severe cases, blood flow supplying the retina is compromised (“ISCHAEMIA”).
Diabetes is now recognised as a chronic condition affecting multiple organs including the Eye. The 2 common types are:
- – Early onset
- – Requiring Insulin immediately
- – Adult onset
- – Usually require medication initially but may require insulin
- – More common variety
The incidence of diabetes is expected to double in the near future.
Several population studies have shown a probable benefit from certain dietary food groups in helping to protect the macula from the effects of ageing. These food groups include:
- Dark green leafy vegetables: eg: kale, spinach, broccoli, coloured greens. This food group is rich in Lutein which is part of macular pigment.
- Coloured vegetables: eg: yellow capsicum, corn, tangerines, pumpkin. This group is rich in Zeaxanthine which is also a macular pigment.
- Cold water oily fish: eg: salmon, tuna, herring, mackerel. This food group is rich in the Omega 3 fatty acids which is important for nerve function. It is recommended that there may be 2-3 servings of fish per week.
- Nuts: eg. Walnuts – this food group is rich in antioxidants.
This is a common complaint in patients.
Cause: The cavity of the eye is filled with a jelly like material called the vitreous. During the ageing process this material liquifies and shrinks and eventually collapses like scaffolding in the cavity of the eye.
This is an eye condition where the pressure of the eyeball is too high (akin to a ball that has been pumped too hard). This increased pressure can damage the optic nerve which leads
to gradual loss of vision. The peripheral vision is lost first but left untreated central vision becomes affected. The patient develops “tunnel vision”. In the majority of cases, there are
no symptoms which is why it is sometimes referred to as the “thief of the night”.
- Open Angle Glaucoma: most common variety
- Closed angle Glaucoma: less common but potentially blinding rapidly – treatment involves laser.