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What is Glaucoma?
Glaucoma is a disease of the nervus opticus - the a part of the attention that carries the pictures we see to the brain. The nervus opticus is formed from many nerve fibers, like an electrical cable containing numerous wires. When damage to the nervus opticus fibers occurs, blind spots develop. These blind spots usually go undetected until the nervus opticus is significantly damaged. If the whole nerve is destroyed, blindness results.
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Early detection and treatment by your ophthalmologist are the keys to preventing nervus opticus damage and blindness from glaucoma.
Glaucoma may be a leading explanation for blindness within the world, specially for older people. But loss of sight from glaucoma can often be prevented with early treatment.
Causes of Glaucoma
Clear liquid called aqueous humour circulates inside the front portion of the attention . to take care of a healthy level of pressure within the attention , a little amount of this fluid produced constantly while an equal amount flows out of the attention through a microscopic system . (This liquid isn't a part of the tears on the outer surface of the attention .)
Because the eyeball is a closed structure, if the catchment area for the aqueous humor-called the drainage angle-is blocked, the surplus fluid cannot effuse of the attention . Fluid pressure within the attention increases, pushing against the nervus opticus and causing damage
What are the various sorts of glaucoma?
Chronic open-angle glaucoma: this is often the foremost common sort of glaucoma.
The risk of developing chronic chronic glaucoma increases with age. The drainage angle of the attention becomes less efficient over time, and pressure within the attention gradually increases, which may damage the nervus opticus . In some patients, the nervus opticus becomes sensitive even to normal eye pressure and is in danger for damage. Treatment is important to stop further vision loss.
Typically, chronic glaucoma has no symptoms in its early stages, and vision remains normal. because the nervus opticus becomes more damaged, blank spots begin to seem in your field of vision. you sometimes won’t notice these blank spots in your day-to-day activities until the nervus opticus is significantly damaged (nearly 80%) and these spots become large. If all the nervus opticus fibers die. Blindness results.
Closed-angle glaucoma: this type of glaucoma is probably more common in our country than in other parts of the planet .
Some eyes are formed with the iris (the coloured a part of the eye) too on the brink of the drainage angle. In these eyes which are often small and farsighted, the iris tissue encroaches into the drainage angle and blocks it in order that the fluid cannot exit the attention . The pressure rises rapidly and causes an acute closed angle attack.
Common symptoms include:
Severe eye pain
Rainbow-colored halos around lights
Nausea and vomiting
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