Basic specification Inspection range 90° Inspection distance 30CM Background light brightness White 31.5asb Visual target brightness 1asb---10000asb Visual target size GoldmannⅢ Visual target interval time 200ms Visual target interval time Standard or adjustment according to patient reflection Threshold test model Center 5º-16,center10º-68,24-2,30-2,30º-60º,nasal step Upper Threshold test model 30º-40 , 30º-76,P-60, 60º-81, 60º-120,1 90º-1

Features 1. Elegant design of butterfly-shape appearance 2. Capable of checking up all-sided visual functions, precise and comfortable in measurement 3. Exquisite manufacturing technique, with comfortable feel 4.This device is applicable to ophthalmology department of hospitals and spectacle stores for precision measurement of visual functions such as myopia, hyperopia, astigmatism, eyesight balance, heterophoria, stereoscopic vision and eyesight amalgamation 5.Three color options:White or Blac