How to read your prescription?
On the lens box and on your optician's slip you'll find the same five parameters. OD stands for the right eye, OS for the left. Below — a worked example of each lens type, in three readings.
Single-vision · spherical
The base prescription — SPH, BC, DIA. For short- and far-sightedness.
Understand your contact-lens
prescription.
How to read your Rx.
| Eye · Auge | ·03SPHSphere · Power | ·04BCBase Curve | ·05DIADiameter |
|---|---|---|---|
|
R
OD · Oculus dexter
Right eye
Rechtes Auge
|
−2.00dpt · sphere | 8.6mm · base curve | 14.1mm · diameter |
|
L
OS · Oculus sinister
Left eye
Linkes Auge
|
−2.00dpt · sphere | 8.6mm · base curve | 14.1mm · diameter |
Your prescription, drawn.
Toric · for astigmatism
Adds cylinder (CYL) and axis (AXIS°) to correct corneal curvature.
Understand your toric
prescription.
How to read your toric Rx.
| Eye · Auge | ·03SPHSphere · Power | ·04CYLCylinder | ·05AXISAxis | ·06BCBase Curve | ·07DIADiameter |
|---|---|---|---|---|---|
|
R
OD · Oculus dexter
Right eye
Rechtes Auge
|
−2.00dpt · sphere | −0.75dpt · cylinder | 180°axis · degrees | 8.6mm · base curve | 14.5mm · diameter |
|
L
OS · Oculus sinister
Left eye
Linkes Auge
|
−2.25dpt · sphere | −1.25dpt · cylinder | 175°axis · degrees | 8.6mm · base curve | 14.5mm · diameter |
Your toric Rx, drawn.
Multifocal · for presbyopia
Adds a near-vision add-power (ADD) — distance and near in one lens.
Understand your multifocal
prescription.
How to read your multifocal Rx.
| Eye · Auge | ·03SPHSphere · Power | ·04ADDAddition · Near power | ·05BCBase Curve | ·06DIADiameter |
|---|---|---|---|---|
|
R
OD · Oculus dexter
Right eye
Rechtes Auge
|
−1.50dpt · sphere | +1.50dpt · addition | 8.6mm · base curve | 14.2mm · diameter |
|
L
OS · Oculus sinister
Left eye
Linkes Auge
|
−1.75dpt · sphere | +1.50dpt · addition | 8.6mm · base curve | 14.2mm · diameter |
Your multifocal Rx, drawn.
Got your numbers? Match the box.
Open the catalogue and filter by SPH, BC and DIA — or let the Lens Picker walk you through five quick questions.
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