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What are cataracts?
A gradual process of the eye’s lens getting cloudier as a result of ageing. There is usually no obvious symptom, such as pain, redness or watery eyes. The more opaque the lens becomes, the worse the vision will become. Some individuals might experience a halo around lights at night. Surgery is a common way to treat cataracts.
What is glaucoma?
It's a group of conditions resulting in damages to the optic nerve. There are no early signs in the common type of glaucoma: Open-angle glaucoma. However, peripheral vision usually deteriorates first. In contrast, if an individual suffers from the lesser common type of glaucoma: closed-angle glaucoma, he or she might see rainbow-coloured circles under bright lights, experience hazy or blurred vision, severe eye and head pain, nausea or sudden sight loss. The damage to the optic nerve by glaucoma are irreversible. Therefore it's recommended to get diagnosis at an early stage.
For more information on vision screening, seminars and eye exam packages, contact PolyVision for details.
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