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Decode Your Eye Prescription: A Simple Guide
26 Nov
Summary
- An eye prescription corrects light focus on the retina for clear vision.
- OD/OS denotes right/left eye; SPH indicates nearsighted/farsightedness.
- Prescriptions expire in 1-2 years; glasses and contacts Rx are not interchangeable.
Decoding your eye prescription empowers you to select appropriate lenses and prevent ordering mistakes. This precise record ensures light focuses correctly on your retina, clarifying blurry vision. Identifying OD/OS for right/left eyes and SPH for nearsightedness or farsightedness is fundamental to understanding your visual needs. Astigmatism is indicated by Cylinder and Axis values, while ADD values assist with close-up tasks, often increasing with age.
Prescriptions are not permanent and typically expire within one to two years for adults, and even sooner for children due to rapid vision changes. This renewal period also serves as a crucial opportunity for eye doctors to screen for silent eye diseases. It's important to note that a prescription for glasses cannot be used for contact lenses, as contacts require specific fittings and parameters due to their direct placement on the eye.
U.S. law ensures you receive your prescription, enabling you to use it for online or in-person purchases. Accurate entry of prescription values is vital, as even minor errors can lead to discomfort or blurred vision. If your new eyewear doesn't feel right or correct your vision effectively, it's essential to consult your provider for adjustments or corrections.
