A summary of common eye conditions
Short Sightedness (Myopia) – This is when images are focussed in front of the retina instead of on it, which makes distant objects appear blurry.
Long Sightedness (Hyperopia) – Hyperopia is the opposite of myopia; the eye focusses images slightly behind the retina. Distance vision can be blurred, and as an object moves towards you, the more your vision will blur.
Astigmatism – The cornea of the eye is usually spherical. If it resembles a rugby ball shape instead, you have astigmatism.
Presbyopia – This condition is associated with ageing, as the near focussing power of the eye decreases throughout life. It causes blurred vision at reading distance and causes an insufficient focusing power for other near distance tasks.
Glaucoma – Glaucoma develops when increased fluid pressure builds up inside the eye. The increased pressure can damage the optic nerve and over time cause loss of vision.
Cataracts – A cataract is the clouding of a normally clear lens. Images can become dull and blurred as a cataract grows and over time sight becomes worse.