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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.
Did you know you can get an eye exam and glasses from Costco's Vision Center? Here's everything else you need to know about the Costco optical program and how it can save you money.
Galanti told analysts on a call Thursday that Costco cut reading glasses, for example, from $18.99 to $16.99 and cut a 48-count of batteries from $17.99 to $15.99.
Should You Buy Gold at Costco? According to The New York Times, 1-oz, 24-karat gold bars are available for purchase by Costco members only, for a price that varies according to market rates.
Treatment options for esotropia include glasses to correct refractive errors (see accommodative esotropia below), the use of prisms, orthoptic exercises, or eye muscle surgery. The term is from Greek eso meaning "inward" and trope meaning "a turning".
If the eye was exotropic, covering the fixating eye will cause an inwards movement; and if esotropic, covering the fixating eye will cause an outwards movement. The alternating cover test, or cross cover test is used to detect total deviation (tropia + phoria).