Nearsightedness, or myopia, is a condition in which objects farther away appear blurred, but close up objects are seen clearly. Common signs of nearsightedness include squinting/blurred vision when viewing at a distance, having to move closer up while watching TV, and/or headaches especially at the end of the day.
Nearsightedness is a very common vision condition affecting nearly 30 percent of the United States population. Even though developing nearsightedness may be inherited, there is growing evidence suggesting that the tendency to develop nearsightedness may be affected by how a person uses there eyes. Individuals who spend a considerable amount of time reading, working at a computer, or doing intense close up visual work may be more likely to develop nearsightedness.
Farsightedness, or hyperopia, is a condition in which distant objects are usually seen clearly, but close up ones do not come into focus properly. Common signs of farsightedness include difficulty maintaining a clear focus on near objects, aching or burning eyes, eye strain, difficulty concentrating, fatigue and/or headaches after close up work. Developing farsightedness may be related to a person’s genetics. Farsightedness is a very common visual condition affecting nearly 25 percent of the United States population and can often be missed during school screening tests.
Astigmatism is a condition in which objects appear blurred at any distance. Common signs of astigmatism include blurred vision, sensitivity to light, and headaches. Astigmatism occurs due to the irregular shape of the cornea or the lens inside the eye. It is a very common visual condition; most people have some degree of astigmatism. Astigmatism may be inherited and is usually present from birth, but may decrease or worsen over time.
Presbyopia is a visual condition in which the lens of your eye loses its flexibility, which makes it difficult to focus on close up objects. Presbyopia usually becomes noticeable in the early to mid-40s and will continue to progress till mid to late 50s. Presbyopia is a natural part of the aging process of the eye. Some signs of presbyopia include blurred close up vision, the tendency to hold reading materials further away, and/or eye fatigue/ headaches when doing close up work.