YZ9 Mirror-Exophthalmometer (Exophthalmia:0～35mm, Orbital Distance: 80～120mm)

Product Abstract:
An instrument to measure the distance between the anterior pole of the eye and a fixed reference point, often the zygomatic bone.
Characteristics:
The product can precisely measure the level of exophthalmia over the orbitalmargins, on the principal basis that both vertexes of cornea and scaleplate are projected to the front of prism by total reflection on the bevel, with the special structure of the isosceles right-angled triangle prism.
Specifications:
Measuring Range of the Exophthalmia: 0～35mm
Adjustable Range of the Orbital Distance: 80～120mm