Purchase the LED Three Character Test from Gulden. This test is a variant of the Worth Four Dot Test, which has been a standard in eye care since the turn of the 20th century. This test is more appropriate for children than the Four Dot Test. Includes red green glasses and batteries.
Made from hard, durable anodized metal and rubber, the LED Three Character from Gulden is lightweight and virtually unbreakable. Includes two size D batteries, the red/green spectacles, and instructions.