Worthmore ll 4 Dot Test

Worthmore ll 4 Dot Test Includes: 1 pair of red/green glasses

Features: 

• Lightweight, palm-sized
• Ergonomically designed handheld device contains 4 peripheral porthole LEDs and 4 central porthole LEDs with constant brightness. 
• The peripheral light tests for peripheral supopression.
• The central porthole lights test for foveal fusion/suppression. 
• A momentary rocker switch allows for peripheral or central testing. 
• Powered by 2 replaceable coin batteries (included). 
• Diameter- 2.5"
• Thickness- 0.5"