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Eyeglass prescription. Using a phoropter to determine a prescription for eyeglasses. An eyeglass prescription is an order written by an eyewear prescriber, such as an optometrist, that specifies the value of all parameters the prescriber has deemed necessary to construct and/or dispense corrective lenses appropriate for a patient.
Adjustable focus eyeglasses are eyeglasses with an adjustable focal length. They compensate for refractive errors (such as presbyopia) by providing variable focusing, allowing users to adjust them for desired distance or prescription, or both. Current bifocals and progressive lenses are static, in that the user has to change their eye position ...
Intraocular lens. An Intraocular lens ( IOL) is a lens implanted in the eye usually as part of a treatment for cataracts or for correcting other vision problems such as short sightedness and long sightedness; a form of refractive surgery. If the natural lens is left in the eye, the IOL is known as phakic, otherwise it is a pseudophakic lens (or ...
The term "Email Security" refers to the protection of email from viruses and malware, while "AntiSpam" refers to the protection from spam, scam and phishing attacks. The term "Web protection" usually includes protection from: infected and malicious URLs, phishing websites, online identity (privacy) protection and online banking protection.
McAfee Internet Security Suite – Special Edition from AOL is our most comprehensive security suite, including firewall protection and our maximum defense against viruses, spyware and other security threats. This service normally costs $80 annually, but you get it at no additional charge as part of your membership when you are on an eligible plan.
Latin, "at one's pleasure"; as much as one desires; freely compare pro re nata, "as needed", which by convention includes an aspect of "up to some maximum". Similarly, compare s.o.s., q.l., and q.s. admov. admove admoveatur: apply [or] add add; let there be added ad us. ad usum: according to custom æq. æquales: equal agit. agita