Examination Tools

Hess Screen-Roll-up is made of heavy fabric reinforced vinyl. Target is printed in Red ink and is invisible with red or green glasses. Screen Grid area is approximately 60 inches square (152 cm x 152 cm) and rolls up for storage. Mounting hardware included. Roll-up ships as 68 x 4 x 4 inch ( 173 x 10 x 10 cm) box (6 lbs).

Hess Screen Unmounted is made of heavy fabric. Target is printed in Red ink and is invisible with red or green glasses. Screen Grid area is approximately 60 inches square (152 cm x 152 cm) and comes folded for ease of shipment. Folding screen can be mounted to a tack board or hung with a clamp at the top like a carpet for display.

Laser Lancaster Test is used to both diagnose and manage ocular motility disorders. The kit includes roll-up screen, both red and green laser line generators, both adult and pediatric Red/Green Glasses, Heavy Duty Chin Rest, instructions and score sheets.

Hess Complete Test Kit is more useful in understanding full visual field and any Aniseikonic affects. Further, the Hess Test may be more simple for children to understand thus yielding more reliable results in pediatric situations compared to Lancaster Test.