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Photo credit: stjameshospital.com
SIGHT: sense faculty to see people and things around us.
Visual Acuity defines the clarity of the visual perception of an image. Vision can be lost at birth or during the lifetime painlessly or painfully for various reasons.
Pain in vision draws one’s attention to seek medical treatment.
Painless loss of vision is akin to termites silently causing destruction from the inside without initial symptoms. One common permanent loss of vision is Glaucoma.
Glaucoma is a condition where the optic nerve is damaged from increased intraocular pressure without us being aware.
Glaucoma damage is permanent and it is not reversible.
Aqueous humor controls the pressure inside the eyes to keep the eyeball firm. It is secreted in the ciliary body and passed through the pupil into the space between the iris and the cornea. Aqueous is drained through the Trabecular meshwork at the anterior chamber angle (Fig 1).
Fig 1. Cross Section of the Eye
Glaucoma has no symptoms in early stages.
Many people are unaware of this silent but preventable blindness. Regular eye screening helps to detect this disease before vision is lost.
Glaucoma Screening for normal individuals:
Screening schedules for individuals at risk of glaucoma:
Prognosis through medication and surgery to prevent further optic nerve damage is good.
Treatment Options
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