Optometry

Optometry

A health care profession concerned with eyes and related structures, as well as vision, visual systems, and vision information processing in humans. The practice of eye and vision care.

Industry: Eyewear; Health care

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Optometry

Complex wavefront retreatment (CWR)

Eyewear; Optometry

A secondary surgery using wavefront-guided ablation in an attempt to reduce higher order aberrations induced by previous surgery. Complex Wavefront Retreatment is an off-label use of the excimer ...

Root mean square (RMS)

Eyewear; Optometry

Actually means the root of the mean of the squares and is an evaluative measurement of a wavefront diagnostic. It describes the smoothness of the surface in terms of deviation from the ideal ...

Most older technology excimer laser machines employ different kinds of masks to customize, refine, and smooth the corneal surface. Many machines have an internal constricting diaphragm (like a camera ...

Concave lens

Eyewear; Optometry

A lens with a hollow shape like the inside surface of a ball. Concave lenses are minus power lenses and are used to correct myopia (nearsighted, shortsighted vision).

Prescription terms

Eyewear; Optometry

Medical prescription terms were originally all written in Latin. Many of the Latin terms continue to be used today. Eyeglass prescriptions are somewhat different, and you can learn about them at Read ...

Ischemia

Eyewear; Optometry

A decrease in the blood supply caused by constriction or obstruction of the blood vessels. J

Prism

Eyewear; Optometry

A prism is a lens that will bends light towards its base. Prisms are used to measure the angle of deviation in strabismus to correcting binocular polyopia when the eyes become misaligned in ...