Category: A

A circumscribed collection of pus.  

Ametropia due primarily to variations in the anterior-posterior axis of the globe.  

A condition in which a contact lens bears upon the apical portion of the cornea.  

A condition in which a contact lens clears the apical portion of the cornea, bearing on the more peripheral portions of the cornea or (in the case of a scleral lens) on the sclera.  

The difference expressed in diopters between the farthest point and the nearest point of accommodation with respect to the spectacle plane, the entrance pupil, or some other reference point of the eye. The difference in the refractive power of the eye when accommodation for near and far vision. It is measured in diopters (D) and…

A bifocal contact lens designed so that the wearer sees alternately through one area of the lens for distance vision and through another area for near vision.  

Symptoms which occur normally while a patient is becoming adapted to contact lenses; includes photophobia, lacrimation. increased blink rate, a foreign body sensation, etc.  

Group of synthetic drugs derived from testosterone.  

Foods or drinks that either prevent nutrients from being absorbed or use excessive amounts of a nutrient, thus making it unavailable for other mental and physical processes. Examples are alcohol and caffeine.  

A flavonoid responsible for the purple colour in fruits and berries; a potent antioxidant.