Single Vision
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Prescription Format:
- Typically presented in a grid format with fields like OD, OS, SPH, CYL, etc.
- Values may be entered digitally or handwritten by the doctor.
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SPH and CYL:
- Sphere (SPH): Indicates lens power for nearsightedness (-) or farsightedness (+).
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Cylinder (CYL): Corrects astigmatism, with a (+) or (-) sign.
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PD (Pupillary Distance):
- Measured in millimeters (mm).
- Can be a single number (e.g., 64) or two numbers (e.g., 31/33).
- Important for aligning lenses correctly in front of each eye.
Progressive Lenses
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ADD (Addition):
- Applies magnifying power for near vision.
- Always noted with a (+) sign.
- Designations like DV (Distance Vision) and NV (Near Vision) may be specified.
Understanding Specific Entries
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PLANO/PL under SPH:
- Indicates no correction needed for nearsighted or farsighted vision.
- Enter 0.00 in the SPH section of the Rx wizard.
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SPHERE/SPH/S/DS under CYL:
- Indicates no correction needed for astigmatism.
- Enter 0.00 in the CYL section of the Rx wizard.
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Multiple ADD Values:
- If your prescription lists multiple ADD values, enter the one with PAL (Progressive Add Lens) into the ADD section of the wizard.
OD and OS
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OD (Oculus Dexter) and OS (Oculus Sinister):
- Latin terms for right eye (OD) and left eye (OS).
- Also seen as O.D. and O.S. respectively.
- OU may reference both eyes, and RE and LE may also be used.
Additional Details
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Ax (Axis):
- Specifies the angle for astigmatism correction (1 to 180 degrees).
- Always accompanies CYL if listed in the prescription.
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Prism:
- Corrects double vision or vision displacement.
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Unfortunately, we cannot accommodate prescriptions requiring Prism correction.
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Measuring PD (Pupillary Distance):
- Measures the distance between your pupils.
- Obtain the most accurate PD by visiting your doctor or using tools like AccuPD.
- Two-number PD (e.g., 31/33) is preferable for custom-made eyewear.