trial lens


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trial lens

A lens used in testing the vision.
See also: lens
References in periodicals archive ?
Tell the child that since you have handled the trial lens without washing your hands then it must not be worn and should be thrown away.
The HFA3 is the first perimeter to introduce patented Liquid Lens technology, which saves time, simplifies set-up and reduces the possibility of human error in trial lens correction.
81 for more information, a free trial lens certificate and a $10 rebate for their first purchase of lenses.
3 purchase items: Trial Lens Set, purchasing object code by CPV - 33122000-1,
The company is offering free trial lens certificates to give
However, the amount of change and final shape of the cornea is still largely dependent on the same nineteenth century trial lens technology used when a contact lens or spectacle prescription is measured.