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Corrective lens. A pair of contact lenses, positioned with the concave side facing upward. 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.
Prism (optics) An optical prism is a transparent optical element with flat, polished surfaces that are designed to refract light. At least one surface must be angled — elements with two parallel surfaces are not prisms. The most familiar type of optical prism is the triangular prism, which has a triangular base and rectangular sides.
Roof prism. A roof pentaprism used in Single-lens reflex cameras; the lower right face is the roof ( dach ). A roof prism, also called a Dachkanten prism or Dach prism (from German: Dachkante, lit. "roof edge"), is a reflective prism containing a section where two faces meet at a 90° angle, resembling the roof of a building and thus the name.
Photorefractive keratectomy ( PRK) and laser-assisted sub-epithelial keratectomy (or laser epithelial keratomileusis [1]) ( LASEK) are laser eye surgery procedures intended to correct a person's vision, reducing dependency on glasses or contact lenses. LASEK and PRK permanently change the shape of the anterior central cornea using an excimer ...
Gluteoplasty (Greek gloutόs, rump + plassein, to shape) denotes the plastic surgery and the liposuction procedures for the correction of congenital, traumatic, and acquired defects/deformities of the buttocks and the anatomy of the gluteal region; and for the aesthetic enhancement (by augmentation or by reduction) of the contour of the ...
Market correction. A market correction is a rapid change in the nominal price of a commodity, after a barrier to free trade has been removed and the free market establishes a new equilibrium price. It may also refer to several such single-commodity corrections en masse, as a collective effect over several markets concurrently.
Gholam A. Peyman (born 1 January 1937) is an Iranian American ophthalmologist, retina surgeon, and inventor. He is best known for his invention of LASIK eye surgery, [2] a vision correction procedure designed to allow people to see clearly without glasses. He was awarded the first US patent for the procedure in 1989.
The Certification for Neurophysiological Intraoperative Monitoring (CNIM) is awarded by the American Board of Electroencephalographic and Evoked Potential Technologists. As of 2010, minimum requirements include 1) a B.A., B.S. [Path 2] 2) R.EP.T or R.EEG.T Credential [Path 1] 3) A minimum of 150 surgeries. Path 1 is a 200 question exam costing ...