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Prism correction. Prism lenses (here unusually thick) are used for pre-operative prism adaptation. 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.
Contact lenses, or simply contacts, are thin lenses placed directly on the surface of the eyes. Contact lenses are ocular prosthetic devices used by over 150 million people worldwide, [1] and they can be worn to correct vision or for cosmetic or therapeutic reasons. [2]
A scleral lens, also known as a scleral contact lens, is a large contact lens that rests on the sclera and creates a tear -filled vault over the cornea. Scleral lenses are designed to treat a variety of eye conditions, many of which do not respond to other forms of treatment.
A correction fluid is an opaque, usually white fluid applied to paper to mask errors in text. Once dried, it can be handwritten or typed upon. It is typically packaged in small bottles, with lids attached to brushes (or triangular pieces of foam) that dip into the fluid. The brush applies the fluid to the paper.
Store your contacts' info all in one place and learn how to add, edit, and delete contacts and groups. Find missing contacts and learn how to send an email in AOL Desktop Gold.
The prism cover test (PCT) is an objective measurement and the gold standard in measuring strabismus, i.e. ocular misalignment, or a deviation of the eye. It is used by ophthalmologists and orthoptists in order to measure the vertical and horizontal deviation and includes both manifest and latent components. [1]
A Schmidt–Pechan prism is a type of optical prism used to rotate an image by 180°. These prisms are commonly used in binoculars as an image erecting system. The Schmidt–Pechan prism makes use of a roof prism section (from the German: "Dachkante", lit. roof edge).
Sketch of an Abbe refractometer with temperature-controlled prisms. An Abbe refractometer, manufactured by Zeiss around 1920. Note that the thermometer is not attached. An Abbe refractometer is a bench-top device for the high-precision measurement of an index of refraction .
Warden. Frank Bishop. North Branch Correctional Institution ( NBCI) is a high-tech, maximum security prison or "hyper-max prison" operated by the Maryland Department of Public Safety and Correctional Services in Cresaptown, unincorporated Allegany County, near Cumberland, Maryland, USA. [1]
Prism-induced fixation disparity curves (prism FD-curves) can be characterized by the following parameters: the y-intercept refers to the naturally occurring fixation disparity without a prism (FD 0) the x-intercept gives the amount of a prism (P 0) that compensates a naturally