Phoroptor-TR-89

Phoroptor-TR-89

Description

Specification
Sphere powers range: +16.75D to- 19.00D, with minimum reading 0.25D or 0.12D
(When +0.12D auxiliary lens or optional 0.12D lens is in use)
+26.75D to-29.00D (When optional 10.00D lens is in use)
Cylinder power range: 0 to一6.00D, with minimum reading 0.25D or 0.12D (when auxiliary lens is in use)
0 to-8.00D (when-2.00D auxiliary lens is in use)
Astigmatic axis scale: 0 to 180° in 5° steps
Cross cylinder:土0.25D, reversal type (synchronized with astigmatic axis)
Rotary prism: 0 to 20△D in 1△D step
Interpupillary adjustment: 48mm to 80mm in 1mm step (right and left synchronized)
Forehead rest adjustment: 16mm backward and forward
Convergence: The optical axes of the lenses are aligned at a distance of 400mm from thevertexes of the corneas (2mm each for right and left inward)Interpupillary distance enabling convergence=57mm to 80mm
Corneal distance device: 2mm forward and 5mm backward from standard plane; with scale
Effective field of view: 19mm
Weight: 5kgs
Size: 323mm X315mm X85mm