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Additionally, pinhole glasses reduce brightness and peripheral vision, and thus should not be used for driving or when operating machinery. [3] Merchants state that, after prolonged use, the plastic grating should become easy to ignore.
By moving the image in front of the deviated eye, double vision can be avoided and comfortable binocular vision can be achieved. Other applications include yoked prism where the image is shifted an equal amount in each eye.
The provider may prescribe an eye patch to relieve the double vision. The patch can be removed after the nerve heals. Surgery or special glasses (prisms) may be advised if there is no recovery in 6 to 12 months.
A corrective lens is a transmissive optical device that is worn on the eye to improve visual perception. The most common use is to treat refractive errors: myopia, hypermetropia, astigmatism, and presbyopia. Glasses or "spectacles" are worn on the face a short distance in front of the eye.
Clinical supervision of such procedures is required to ensure that double vision does not occur. Most of the patients who underwent this treatment gained improved visual acuity of the weaker eye, and some also showed increased stereoacuity.
Glasses are easiest while contact lenses can provide a wider field of vision. Surgery works by changing the shape of the cornea. [5] Far-sightedness primarily affects young children, with rates of 8% at 6 years old and 1% at 15 years old. [9]