There are different ways how opticians write the prescription and interpreting prescription correctly is very important. A small error on prescription can lead to wrong lenses. Please refer to the fig. below to interpret different prescription:
Prescription 1:
|
|
SPH |
CYL |
AXIS |
ADD |
|
OD (RIGHT) |
|
-050 |
100 |
|
|
OS (LEFT) |
-050 |
-100 |
80 |
|
The prescription can be interpreted as:
|
|
SPH |
CYL |
AXIS |
ADD |
|
OD (RIGHT) |
|
-0.50 |
100 |
|
|
OS (LEFT) |
-0.50 |
-1.00 |
80 |
|
Prescription 2:
|
|
SPH |
CYL |
AXIS |
ADD |
|
OD (RIGHT) |
|
CYL |
______ |
|
|
OS (LEFT) |
-0.50 |
-1.00 |
80 |
|
The prescription can be interpreted as:
|
|
SPH |
CYL |
AXIS |
ADD |
|
OD (RIGHT) |
|
NONE OR |
NONE |
|
|
OS (LEFT) |
-0.50 |
-1.00 |
80 |
|
Please note: If there is CYL power then Axis value is a must. If there is no value (
Prescription 3:
|
|
SPH |
CYL |
AXIS |
ADD |
|
OD (RIGHT) |
-0.25 -1.00 X 30 | |||
|
OS (LEFT) |
-0.50 -1.00 X 90 | |||
The prescription can be interpreted as:
|
|
SPH |
CYL |
AXIS |
ADD |
|
OD (RIGHT) |
|
-1.00 |
30 |
|
|
OS (LEFT) |
-0.50 |
-1.00 |
30 |
|
