Hand-held optical device placed in front of the eyes to aid vision testing.

Hand-held optical device placed in front of the eyes to aid vision testing.

An individual ophthalmic lens from a trial lens set. (lens holder)

A hand-operated, non-powered ophthalmic device intended to temporarily prevent and/or attenuate the passage of light (vision) to the eye(s) during an eyesight examination (e.g., diagnosis/measurement of heterophoria/heterotropia, myopia). The part of the device used to cover the eye(s) is typically spoon- or oval-shaped, and may be fully opaque or incorporate small holes and/or a Maddox lens(es) [i.e., coloured lens(es)]; the device also incorporates a handle and/or binocular frame. This is a reusable device.

TRIAL RING - 10 DIOPTER

TRIAL RING - 12 DIOPTER

TRIAL RING - 15 DIOPTER

TRIAL RING - 2 DIOPTER

TRIAL RING - 20 DIOPTER

TRIAL RING - 25 DIOPTER

TRIAL RING - 2 DIOPTER NO HANDLE

TRIAL RING - 3 DIOPTER

TRIAL RING - 30 DIOPTER

TRIAL RING - 35 DIOPTER

TRIAL RING - 3 DIOPTER NO HANDLE

TRIAL RING - 4 DIOPTER

TRIAL RING - 40 DIOPTER

TRIAL RING - 4 DIOPTER NO HANDLE

TRIAL RING - 5 DIOPTER

TRIAL RING - 5 DIOPTER NO HANDLE

TRIAL RING - 6 DIOPTER

TRIAL RING - 8 DIOPTER

SET, LENS, TRIAL, FRESNEL PRISM, 2 - 10 DIOPTER

SET, LENS, TRIAL, FRESNEL PRISM, NO HANDLES, 2 - 10 DIOPTER

SET, LENS, TRIAL, FRESNEL PRISM, 12 - 40 DIOPTER

SET, LENS, TRIAL, FRESNEL PRISM, NO HANDLES, 12 - 40 DIOPTER

Optego Spherical Flipper, +1.50/-3.00

Optego Prism Flipper, 8^in/8^out

Optego Prism Flipper, 9^in/9^out

Optego® Prism Flipper, 10^in/10^out

Optego® Prism Flipper, 12^in/12^out

Optego® Prism Flipper, 14^in/14^out

Optego® Prism Flipper, 16^in/16^out

Optego® Prism Flipper, 18^in/18^out

Optego® Prism Flipper, 20^in/20^out

Optego® Prism Flipper, 2^in/4^out

Optego® Prism Flipper, 3^in/12^out

Optego® Prism Flipper, 4^in/6^out

Optego® Prism Flipper, 4^in/8^out

Optego® Prism Flipper, 4^in/12^out

Optego® Prism Flipper, 5^in/10^out

Optego® Prism Flipper, 6^in/8^out

Optego® Prism Flipper, 6^in/10^out

Optego® Prism Flipper, 6^in/12^out

Optego® Prism Flipper, 8^in/10^out

Optego® Prism Flipper, 8^in/12^out

Optego® Prism Flipper, 8^in/14^out

Optego® Prism Flipper, 8^in/16^out

Optego® Prism Flipper, 10^in/12^out

Optego® Prism Flipper, 10^in/20^out