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Both myopia (short-sightedness) and hypermetropia (far-sightedness) are common eye conditions that occur when light does not focus on the retina properly. Both conditions are easily corrected using prescription glasses or contact lenses or, in mild cases, by laser eye surgery.
Myopia is the term used to define short sightedness. Light from a distant object forms an image before it reaches the retina because the eye is too long or the cornea/crystalline lens is too strong. This causes images that are further away to be more difficult to see and to appear unclear. A myopic patient has clearer vision when looking at objects close to them, but distant objects will appear blurred. They will often be seen squinting to view things that are further away, which can lead to headaches. While the exact cause of myopia is unknown, research suggests that the condition is inherited. If one or both parents are near-sighted, there is a greater likelihood that their children will be near-sighted. Evidence also suggests that the condition may stem from how the individual uses their eyes. Hobbies or employment that requires regular and intense close-up use of your eyes (reading, logging daily hours behind the computer) can increase your risk of developing myopia. The condition has also been linked to environmental factors and health problems. A sudden increase in myopia can be an early sign of diabetes.
Hypermetropia (Hyperopia) means far-sighted and it is where the image of a nearby object is formed behind the retina. This could be because the eye is too short or the cornea/crystalline lens does not refract light enough when trying to view an image. A hypermetropic patient may have blurred vision when looking at objects close to them and clearer vision when looking at objects in the distance. It may be difficult to diagnose in children until examined by an eye doctor, because young patients may have better vision seeing things that are far away, but have an issue while trying to hold focus while reading. In young children, due to having high power reserves in the eye, there are often little or no symptoms of the condition. As you age, common symptoms are headaches and eye strain. Red eyes from the increased strain is also a symptom, which occasionally can make your eyes feel dry and achy.
Myopia and hypermetropia are both easily corrected at using prescription glasses or contact lenses specifically designed to counteract the effect. For myopia, a concave lens (minus-powered) is placed in front of the myopic eye, moving the image back to the retina. For some patients, contact lenses provide clearer vision and a wider field of view than eyeglasses. For patients with hypermetropia, eyeglasses or contacts that place a convex (plus-powered) lens in front of the hypermetropic eye will be prescribed, allowing the image to move forward and focus correctly on the retina. Keep in mind that contact lenses are worn directly on the eyes, which requires proper care to safeguard eye health. You can work with our doctors at Vue Vision to determine which method will work best for your individual circumstances and abilities. Myopia and hypermetropia are common conditions that are easily treated. Come in for diagnosis and treatment to have your vision restored to be sharp and focused.