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Refractive error is a common eye disorder that occurs when the eye cannot clearly focus on images. Speaking to Tweneboa Koduah on UTV, Dr Desmond Akuffo, an Optometrist at Robert & Sons said hough it cannot be prevented, it can be treated with corrective glasses, contact lenses or a refractive surgery. According to him, Ghana does not have the equipment to undergo a refractive surgery but anyone with a refractive error in the country can choose between a corrective glass or contact lenses. The four most common refractive errors are: myopia (shortsightedness): a person with myopia cannot see things from afar clearly, Hyperopia (farsightedness): difficulty in seeing close objects clearly; Astigmatism: distorted vision resulting from an irregularly curved cornea, the clear covering of the eyeball and Presbyopia linked to ageing and leads to difficulty in reading or seeing at arm's length. Watch Dr. Desmond Akuffo explain refractive error on UTV.