ASF Hess Chart / Hess Screen

Material Aluminum
Digital (LED Back Lit) Yes
Brand ASF Universal
Color Gray
Item Weight 7 kg
Size 81*81*2.5 cm
Power Requirements 220V,60 W
Shape Rectangular
Usage/Application Hospital And Clinic
Product Code ASF-HS92

Minimum order quantity: 1 Piece

Hess Chart (position)   The basic principle of Hess chart is foveal projection therefore the higher field belongs to the higher eye.  This is opposite of diplopia charting where the higher image is of the lower eye.  Position of the central dot indicates whether the deviation is in primary position or not.