?
explore
test
patient
sphere power
0.00
cylinder power
0.00
cylinder angle
90
refractive error
+1.00
+1.00
180
+1.00
+1.00
180
working distance
0.00
lenses
plus lenses
minus lenses
sphere power
0.00
cylinder power
0.00
cylinder angle
90
sphere power
0.00
cylinder power
0.00
cylinder angle
90
streak angle
180
45°
90°
135°
180°
reset
TEST
X
new patient
enter refractive error:
?
check answer
• fill in all fields
• enter numbers only
• enter numbers within allowed ranges:
- sphere:-20 to +20
- cylinder: -6 to 6
- cylinder angle: 0 to 180
X
+20.00
+20.00
+20.00
+20.00
+20.00
+20.00