55 Terms
Contributors in Eye surgery
Eye surgery
Optometrist
Eyewear; Optometry
A doctor of optometry is a non-medical primary eye health care provider who specialises in the examination, diagnosis, treatment, management, and prevention of diseases and disorders of the visual ...
Against-the-rule astigmatism
Eyewear; Optometry
With the rule astigmatism has an axis of about 180 degrees (when Rx is written in minus cylinder form). "Against the rule" astigmatism has the axis at about 90 degrees. Both forms are common. ...
Humanitarian device exemption
Eyewear; Optometry
A Humanitarian Device Exemption from the Food and Drug Administration authorises the use and marketing of a device that is intended to benefit patients in the treatment of conditions that affect ...
Aphakic spectacles
Eyewear; Optometry
Thick, plus-powered eyeglasses that were once the standard correction for optical power following extraction of cataract. The glasses were cumbersome and greatly distorted peripheral vision. Today, ...
Point spread function (PSF)
Eyewear; Optometry
Often used in wavefront diagnostic analysis. A single round spot of light becomes diffused when it passes through an aberrated element such as a human eye. Aberrations cause some of the light to ...
