P oor eyesight, medically referred to as refractive error, is a common vision problem that affects millions of people worldwide. It can significantly impair an individual's quality of life, making daily activities such as reading, driving, and even recognizing faces challenging. Fortunately, there are numerous measures you can take to keep your eyes healthy and prevent the onset or worsening of poor eyesight. In this essay, we'll delve into the detailed definition of refractive error, explore recommended tips for maintaining good eye health, and discuss common symptoms to look out for. Detailed Definition of Refractive Error Refractive error occurs when the shape of the eye prevents light from focusing properly on the retina, resulting in blurred vision. There are four primary types of refractive error: myopia (nearsightedness), hyperopia (farsightedness), astigmatism, and presbyopia. Myopia is characterized by difficulty seeing distant objects, while hyperopia makes close obje...
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