VT12
PHOROPTER(VISION TESTER)
•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 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)
±0.50D optional
Rotary prism: 0 to 20ΔD in 1ΔD step
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