Sleek and safe glasses for viewing during studies where metallic glasses would be unsafe or cause data artefacts. These all-plastic glasses come with a comfortable adjustable head strap and face/nose padding for supreme comfort.

This set is supplied with an adult-sized frame, a set of nine individually-marked pairs of ophthalmic/Rx lenses (+3.0, +2.0, +1.0, 0.0, -1.0, -2.0, -3.0, -4.0, -5), vision test chart, lens cleaning kit, and a compact case for easy storage and handling. The lenses are easily exchanged with a unique and easy thumb screw system. No previous optical knowledge is necessary for clear, quick, and safe patient/subject vision correction.