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  2. Anisometropia - Wikipedia

    en.wikipedia.org/wiki/Anisometropia

    Spectacle correction. For those with large degrees of anisometropia, the wearing of standard spectacles may cause the person to experience a difference in image magnification between the two eyes (aniseikonia) which could also prevent the development of good binocular vision. This can make it very difficult to wear glasses without symptoms such ...

  3. Vertex distance - Wikipedia

    en.wikipedia.org/wiki/Vertex_distance

    Vertex distance is the distance between the back surface of a corrective lens, i.e. glasses (spectacles) or contact lenses, and the front of the cornea. Increasing or decreasing the vertex distance changes the optical properties of the system, by moving the focal point forward or backward, effectively changing the power of the lens relative to ...

  4. Wedge prism - Wikipedia

    en.wikipedia.org/wiki/Wedge_prism

    Wedge prism. The wedge prism is a prism with a shallow angle between its input and output surfaces. This angle is usually 3 degrees or less. Refraction at the surfaces causes the prism to deflect light by a fixed angle. When viewing a scene through such a prism, objects will appear to be offset by an amount that varies with their distance from ...

  5. Maryland Correctional Institution for Women - Wikipedia

    en.wikipedia.org/wiki/Maryland_Correctional...

    Adult women. Population. 800 (as of 2014) Managed by. Maryland Department of Public Safety and Correctional Services. Warden. Margaret Chippendale. Maryland Correctional Institution for Women ( MCI-W) is a multi-level security prison operated by the Maryland Department of Public Safety and Correctional Services in Jessup, Maryland .

  6. Burning glass - Wikipedia

    en.wikipedia.org/wiki/Burning_glass

    A burning glass or burning lens is a large convex lens that can concentrate the sun 's rays onto a small area, heating up the area and thus resulting in ignition of the exposed surface. Burning mirrors achieve a similar effect by using reflecting surfaces to focus the light. They were used in 18th-century chemical studies for burning materials ...

  7. Micropsia - Wikipedia

    en.wikipedia.org/wiki/Micropsia

    Micropsia is a condition affecting human visual perception in which objects are perceived to be smaller than they actually are. Micropsia can be caused by optical factors (such as wearing glasses), by distortion of images in the eye (such as optically, via swelling of the cornea or from changes in the shape of the retina such as from retinal edema, macular degeneration, or central serous ...

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