The uvea is the pigmented middle layer of the eyeball. It has three segments: the iris, the ciliary body and the choroid
In most cases, glaucoma is associated with higher-than-normal pressure inside the eye — a condition called ocular hypertension. But it can also occur when intraocular pressure (IOP) is normal. If untreated or uncontrolled, glaucoma first causes peripheral vision loss and eventually can lead to blindness.
Generally you don’t as usually there are no symptoms. As the optic nerve starts to become damages it causes small gaps in your field of vision – the area which you can see around you, but in the early stages you will not realise this is happening. Chronic glaucoma is rare under the age of 40 years but the risk increases as you get older, especially if you are over 65 years. There is an increased risk if somebody in the family also has glaucoma. It could be picked up by pressure in your eyes.
If the condition is picked up early enough and is carefully treated there is little like hood of losing your sight. If left untreated the optic nerves become progressively damaged and the area which you can see around you becomes smaller and smaller and eventually could result in complete loss of sight.
No, but it can be treated. Any loss of sight that has already occurred cannot be restored but treatment should prevent it from getting worse.
The aim is to lower the pressure within the eye back to normal. The usual form of treatment is with eye drops. It is vital that you do not run out of the drops or forget to put them in otherwise the pressure may go up causing further damage. If the pressure cannot be controlled then another type of drop is added or a small operation may be necessary.
Macular Degeneration causes loss of central vision and is the leading cause of registered vision impairment for people over 50 in the western world If you a family member or friend have been recently diagnosed you should read more the condition here.
Causes the macula to deteriorate. If it occurs later in life, it is called Age-related Macular Degeneration (AMD). This leads to varying degrees of visual impairment and will impairment and will impede daily activities such as reading, driving, recognizing faces and working with fine detail. It does not lead to total blindness since peripheral vision is not lost.
This is the steady deterioration of the cells of the macula. Onset and progression is normally gradual. Unfortunately there is currently no treatment for Dry MD but those with the condition can be considerably helped by the use of low vision aids. Giving up smoking, maintaining a healthy diet, and/or the use of nutritional supplements may stabilize of both type of MD
This results from the growth of abnormal blood vessels lying behind the macula. These vessels leak fluid causing damage and scarring to the macula itself leading to loss of central vision. Wet MD often starts suddenly and can progress very quickly.
THERE ARE TREATMENTS TO STABLISE SOME FORMS OF WET MD BUT THEY MUST BE GIVEN VERY SOON AFTER THE ONSET OF SYMPTOMS. SPEED IS ESSENTIAL
Rapid diagnosis is critical. If you have noticed a sudden change in your vision go without delay to your optometrist (optician) who can refer you direct to a retinal specialist at the most suitable clinic. For suspected Wet MD, a patient should be seen urgently and within a week if possible. More than 3 weeks is too long a delay for this appointment. For Dry MD change will be more gradual and a patient should receive an ophthalmic assessment within 3 months. Your condition may be referred to as wet or dry AMD.
After diagnosis you may be offered active treatment of the disease but these treatments are not suitable for everyone. Either way you should be given further advice and appropriate support.
Eat a healthy diet or take a nutritional supplement –The Macular Disease Society has information on this
Ask an eye specialist about having a low vision assessment
Visit a sight or resource centre to view and try optical and electronic aids to vision and daily living
Go to the optometrist quickly if you detect any change and certainly at least every two years