ENVI ER-100
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 Spherical lens
+.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
Diopter Cross
Five position rotating drum
Eyepiece
+-.50: +-0.5 diopter cross cylinder with horizontal plus(+) axis.
OC
Occuluder
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 anddownward 40(46)
Near vision test
Main optical axes of both lenses converges by means of a tilt mechanismat 40cm in front of the eyes at 64mm P.D. If P.D. for far vision is less then54mm,converging operation stops.
Pupillary Distance
48 to 75mm by 1mm step
Binocular balance test
Rotary prism and polarizing lens methods are available.
