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  2. Corrective lens - Wikipedia

    en.wikipedia.org/wiki/Corrective_lens

    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. Contact lenses are worn directly on the surface of the eye. Intraocular lenses are surgically implanted ...

  3. Prism correction - Wikipedia

    en.wikipedia.org/wiki/Prism_correction

    Eye care professionals use prism correction as a component of some eyeglass prescriptions. A lens which includes some amount of prism correction will displace the viewed image horizontally, vertically, or a combination of both directions. The most common application for this is the treatment of strabismus. By moving the image in front of the deviated eye, double vision can be avoided and ...

  4. Bates method - Wikipedia

    en.wikipedia.org/wiki/Bates_method

    [10] Bates felt that corrective lenses, which he characterized as "eye crutches", are an impediment to curing poor vision. In his view, "strain" would increase as the eyes adjust to the correction in front of them. He thus recommended that glasses be discarded by anyone applying his method. [10]

  5. Refractive error - Wikipedia

    en.wikipedia.org/wiki/Refractive_error

    Refractive errors are corrected with eyeglasses, contact lenses, or surgery. [3] Eyeglasses are the easiest and safest method of correction. [3] Contact lenses can provide a wider field of vision; however they are associated with a risk of infection. [3] Refractive surgery permanently changes the shape of the cornea. [3]

  6. Pinhole glasses - Wikipedia

    en.wikipedia.org/wiki/Pinhole_glasses

    Pinhole glasses, also known as stenopeic glasses, are eyeglasses with a series of pinhole-sized perforations filling an opaque sheet of plastic in place of each lens. Similar to the workings of a pinhole camera, each perforation allows only a very narrow beam of light to enter the eye which reduces the size of the circle of confusion on the ...

  7. Orthokeratology - Wikipedia

    en.wikipedia.org/wiki/Orthokeratology

    Orthokeratology, also referred to as Night lenses, Ortho-K, OK, Overnight Vision Correction, Corneal Refractive Therapy (CRT), Accelerated Orthokeretology, Cornea Corrective Contacts, Eccentricity Zero Molding, and Gentle Vision Shaping System (GVSS), is the use of gas-permeable contact lenses that temporarily reshape the cornea to reduce refractive errors such as myopia, hyperopia, and ...

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