trial lens


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trial lens

A lens used in testing the vision.
See also: lens
References in periodicals archive ?
In perimetry, a trial lens provides the refractive correction needed so each patient can see clearly during the test.
To celebrate the World Sight Day, Meghrigian Instituite decided to donate ophthalmic trial lens sets and trial frames
Howes, president of Bausch & Lomb North America, (left) delivers the first PureVision(TM) trial lens set to Rochester optometrist Dr.
Tenders are invited for Supply of Establishment of Eye Vision Centre Tonometer Schiotz Tonometer (Schiotz), Direct Ophthalmoscope, Illuminated Vision Testing Drum, Trial lens sets with Trial frames, Snellen & Near Vision Charts, Battery operated torch (02), Epilation forceps (set), Slit Lamp etc.
Patients are even provided with a unique PreVue trial lens in order to "preview" their potential vision before CustomVue treatment is performed.
00D trial lens monocularly over each eye while wearing the full distance correction, and asking the patient whether the view is clearer when the lens is over the right eye or the left eye.
Asking high-quality open questions when taking a history (see panel below) and physically demonstrating the difference that toric lenses make, simply by holding a cylindrical trial lens over a spherical contact lens correction, are useful communication strategies for eliciting the need for a change.
Tenders are invited for Refraction Unit With Trial Lens Set And Stool