Manual phoropter Minus vision Tester 

Color Option: Grey White / Black

Specifications:

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-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: ±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 the vertexes of the corneas (2mm each for right and left inward)

Interpupillary distance enabling convergence=50mm to 80mm

Corneal distance device: 2mm forward and 5mm backward from standard plane; with scale

Effective field of view: 19mm

Weight: 4kgs

Color Black