Doctor insights on:
What Is Myopia
Nearsighted: A person is nearsighted when light is focused in front of the retina, thus making far away images fuzzy. This can be corrected with glasses, contact lenses, or surgery. Many people are born slightly farsighted and become more nearsighted as they get older. ...Read moreSee 1 more doctor answer
Astigmatism: Astigmatism is one type of refractive error. Myopia (or nearsightedness), hyperopa (or farsightedness), and astigmatism all can cause refractive error. Refractive error is what causes a patient to require glasses or contact lenses to see better. Astigmatism is typically when the cornea is shaped more like a football than a basketball. Glasses, contact, and LASIK can fix this problem. ...Read moreSee 1 more doctor answer
Corneal curvature: Astigmatism just means that your cornea is not perfectly spherically shaped and instead has different curvatures in different directions (kind of like a football in the extreme example). Everyone has some degree of astigmatism although not everyone has enough to notice it. I doubt you "need" any surgery. ...Read moreSee 1 more doctor answer
Trouble Seeing Far: Myopia occurs in many people and means you have problems seeing far away but usually don't have trouble reading or seeing things closer to you. Typically it can't be prevented and occurs when the eye becomes a bit more oval or longer in shape. Any changes in vision should be evaluated by a doctor to be sure that it's not something more severe or dangerous. For example, diabetes can affect vision. ...Read moreSee 2 more doctor answers
Vision correction: Lasik is laser in situ keratomileusis. The procedure uses a cold laser to reshape the front window of the eye (cornea) in order to correct nearsightedness, farsightedness and astigmatism. The procedure places the treatment under a flap of tissue that is created either by another laser or a blade. Lasik is one of the most commonly performed vision correction surgeries worldwide. ...Read moreSee 4 more doctor answers
Nearsightedness: In this error of refraction, the eye behaves as if it is too long and the natural focal point is in front of the retina (the film that you see with at the back of the eye). The eyeglass to correct this is a minus lens which disperses the light and pushes that focal point back onto the retina. Most myopia gradually increases through the teens years and stops in the 20's. ...Read more
Impaired vision: In children, when the nerve pathways between the eye and the brain are developing, there needs to be two clear images (one from each eye) for appropriate development of vision and depth perception. If one image is abnormal (e.g. Vision is blocked or blurred) or the eyes are misaligned producing double vision, then as a coping mechanism, the abnormal image will be suppressed and vision impaired. ...Read moreSee 1 more doctor answer
Turning off vision: The human brain utilized the input of both eyes to aid in depth perception/distance etc. As a child grows, their eyes may have different strength, or weakness in an eye muscle may allow one to line up wrong. The fuzzy or double vision confuses the brain. Over time the brain may begin turning off the input of one eye & keep the best. That process is called amblyopia. If caught early it can be fixed. ...Read more
Impaired eye fluid: Glaucoma is a condition in the inside of the eye, in which the fluid (aqueous humor) cannot get out at a low enough pressure to prevent the pressure from causing loss of the nerves and blood vessels at the back of the eye which causes vision to be lost. Measured will be eye pressure, corneal thickness, visual field, and disc structure. These are all part of the diagnosis. ...Read moreSee 2 more doctor answers
Eye pressure problem: Glaucoma is an eye disorder that damages the eye’s optic nerve, which is the main nerve attached to the back of the eyeball. It usually happens when fluid builds up in the eyeball and increases the pressure inside the eye, thus damaging the optic nerve. Glaucoma is a cause of blindness for people over age 60. Blindness from glaucoma usually can be prevented with medical care. ...Read more
Hyperopia: If the eye from front to back is too short, so that the lens and cornea cannot focus the light inside the eye (too weak), the correction for this is to supply a magnifying lens in the eyeglasses. The lens of a farsighted person behaves like a magnifying glass. Most hyperopia is in young people and they grow out of much of it. It also reappears in people past 40 as the natural lens loses focus. ...Read moreSee 1 more doctor answer
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