Myopia, is a condition of the eye where light focuses in front of, instead of on, the retina. This causes distant objects to be blurry while close objects appear normal. It is also called nearsightedness.
Hyperopia is a condition in which visual images come to a focus behind the retina of the eye and vision is better for distant than for near objects—It is also called also farsightedness.
A common form of visual impairment in which “part of an image” is blurred due to an irregularity in the cornea. The light entering the eye fails to meet at the focal point in the back of the eye so there is a need for a higher prescription at that “part of the prescription”
A cataract is formed when the natural lens of the eye, responsible for focusing light and producing sharp images, becomes cloudy and hardens, resulting in a loss of visual acuity. The lens of the eye is normally clear at birth but is one of the first parts of the body to show the effects of aging. It usually develops gradually over several months or years. Normally, the onset of a cataract in one or both eyes may cause decreased night vision, impaired depth perception, and increased color distortion.
Blepharitis means “inflammation of the eyelids”, namely the eyelid margins where the eyelashes grow. Natural oils and bacteria build up and form ‘crusty’ material that irritates the surface of the eye. Often blepharitis causes redness of the eyes or eyelids, itching, foreign body sensation and general discomfort. It is caused by an imbalance of oil production and therefore has no cure but treatment is needed for this chronic condition. Lid scrubs, warm compresses and antibiotic drops may all be needed.