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not rated $10.50 Select options
Red/Green or Red/Blue Glasses
Prices are available in CAD and USD. Please use the currency selector at the top of the page to switch between Canada and United States. To select more than one option of flipper, click on Add To Cart after each selection. Reversible Red/Green or Red/Blue Glasses (ophthalmic quality frame). One size fits all. Ideal for any age. Can be worn over current glasses. Lenses easily reversed.
not rated $53.30 Read more
Worth Four Dot Test
The Worth Four Dot Test helps evaluate color perception by stimulating the red, green and blue cone receptors in the retina. The test set consists of a high-quality, chrome flashlight with a pair of universal spectacles together with complete instructions. The flashlights in the test sets require 2 D-cell batteries, which are not included.
not rated $90.50 Read more
Worthmore® II Four Dot Test
This ergonomically designed handheld device features 4 peripheral porthole LEDs (Light-Emitting Diodes) and 4 central porthole LEDs with a constant brightness. The peripheral porthole lights test for peripheral suppression; the central porthole lights test for foveal fusion/suppression. A momentary rocker switch allows for peripheral or central testing.