The MP-135(Plus Cylinder) manual phoropter with the newly designed reading card light attachment is a cost-effective and quality built manual phoropter from Envi
Essential Eyecare Instruments. The reading card light, excellent mechanical feel, and high-quality optics on the Envi manual refractor meets the demands of the eyecare provider while adding innovation to the industry-standard manual phoropter
Auxiliary Lenses:
O.Q: Open aperture
R: Retinoscopic lens;+1.50 diopter spherical lens(for 67cm)
P: Polarizing filter
RMV: Red Maddox rod is set vertically.
RMH: Red Maddox rod is set horizontally.
WMV: White Maddox rod is set vertically.
WMH: White Maddox rod is set horizontally.
RL: Red lens.
GL: Green lens.
+.12:+.12 diopter spherical lens. Spherical power can be set by 0.12 diopter.
PH: A 1mm diameter pinhole is provided.
6 U: 6 diopter base up prism.
10I:10 diopter base in prism.
+-.50: +-0.5 diopter cross cylinder with horizontal plus(+) axis.
OC: Occuluder
Range of measurement:
Myopia: 0 to -19.00 diopter in 0.25 diopter step
Hyperopia: 0 to +16.75 diopter in 0.25 diopter step
Astigmatism: 0 to -6.00 diopter(-8.00 diopter) in 0.25 diopter step
Phoria and vergency: 20 to 0 to 20 by 1 step;Inner 40;Outer 40(50);Upward and downward 40(46)
Near vision test: Main optical axes of both lenses converges by means of a tilt mechanism at 40cm in front of the eyes at 64mm P.D. If P.D. for far vision is less then 54mm,converging operation stops.
Binocular balance test: Rotary prism and polarizing lens methods are available.
P.D.: 48 to 75mm by 1mm step