Myopia "eye", commonly known asbeing nearsighted and shortsighted. Acondition of the eye where the light thatcomes in does not directly focus on the retinabut in front of it. This causes the image thatone sees when looking at a distant object tobe out of focus but in focus when looking at aclose object.
Image showing the effect of myopia A condition of the eye where the light that comes in does not directly focus onthe retina but in front of it. This causes the image that one sees when looking at a distant object to be out of focus but in focus when looking at a close object.
By Cause Axial myopia is attributed to an increase in the eyes axial length. Refractive myopia is attributed to the condition of the refractive elements of the eye. Borish further subclassified refractive myopia: Curvature myopia is attributed to excessive, or increased, curvature of one or more of the refractive surfaces of the eye, especially the cornea. In those with Cohen syndrome, myopia appears to result from high corneal and lenticular power. Index myopia is attributed to variation in the index of refraction of one or more of the ocular media.
BY DegreeMyopia, which is measured in diopters by the strengthor optical power of a corrective lens that focuses distantimages on the retina, has also been classified by degreeor severity:• Low myopia usually describes myopia of −3.00diopters or less (i.e. closer to 0.00).• Medium myopia usually describes myopia between−3.00 and −6.00 diopters.Those with moderateamounts of myopia are more likely to have pigmentdispersion syndrome or pigmentary glaucoma.•High myopia usually describes myopia of −6.00 ormore.People with high myopia are more likely tohave retinal detachments and primary open angleglaucoma.Roughly 30% of myopes have high myopia.
Signs and symptomsAn eye care professional can diagnosenearsightedness with a simple eyeexam. The most common symptoms ofnearsightedness include:•Blurred distance vision•Frequent squinting of eyes•Eye strain or headaches from trying tofocus
Treatments for NearsightednessNearsightedness is easily corrected by refocusing the lightrays onto the retina of the eye. This is commonly donethrough:•Eyeglasses and contact lenses: The simplest treatmentoption chosen by most patients withnearsightedness. PureVision2 contact lenses deliver theclear, crisp vision that you should demand – designed toreduce halos and glare – especially in low light.•Bausch + Lomb Vision Shaping Treatment (VST) - aninnovative process that uses customized shaping lenses togently correct your vision while you sleep so you can enjoyclear vision while you’re awake•Surgery: Surgical options are available, but can beexpensive, and may involve more risk than contact lensoptions available. These procedures use laser technologyor manual incisions to remove small amounts of tissuefrom the cornea.