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For example, the type of lenses you need and the age at which you received your last exam can all have a big impact on this answer. Normal prescriptions have a shelf life of one to two years. If your doctor determines that you have additional health concerns, he or she may prescribe glasses or contact lenses for a shorter period of time.
If you are under 18 years old when getting an eye exam or have not had a recent exam , then there is no set expiration date because your eyes could change any day.
Along with these factors, if you ever experience any issues like blurred vision or discomfort while wearing them-all of which can lead back to an inaccurate prescription- then you should consult with your doctor at the earliest opportunity. The prescription you have now is good for a certain amount of time. There are some common reasons why your prescription might change, such as:. If you are experiencing any problems with seeing anymore after getting an exam at the optometrist, then it may be time for another visit!
The NHS recommends that you have your prescription and eye health checked at least every two years. Is it possible to order glasses online? A local eye doctor will review your results and send you a prescription. You can then order contacts or glasses online. You may not be able to order an eye prescription online in every state.
Prescription websites will charge a fee. What if my prescription has expired? Basically, writing and giving you the glasses prescription is part of the eye exam. The simple answer is no. Glasses prescriptions have expiration dates because your eyes change over time, causing your current glasses prescription to be inaccurate. Glasses made with out-of-date prescriptions may cause headaches, eye strain, and blurry vision, resulting in serious accidents.
So, you should have routine eye exams to ensure that your glasses prescription still fits your eyes. These exams will also check for conditions like macular degeneration, diabetic eye disease, and glaucoma. Eyeglass lens prescriptions are usually valid for at least one year. However, different state laws require different minimum prescription lengths, so we recommend checking your minimum eyeglass prescription expiration by state.
The law gives three 3 considerations for the length of a contact lens prescription:. This is set forth as the least amount of time your prescription is good for, unless you have a medical condition that warrants less time.
Second, if your state has a law that requires a longer period than one year, then it should be followed. Third, your eye doctor has discretion to write a prescription for longer than one year, state laws permitting, based on your current eye health and history.
To sum up, the minimum established by federal law is one year. The prescription can be longer based on state laws and the discretion of your eye doctor.
The following table summarizes and links to each state law where available , listing the state and the minimum as required by Federal or State law and maximum lengths as dictated by State law. State Min. Length Max. How long is my prescription good for? Click on your state for more information Select your state. Summary of state laws. When does my contact lens prescription expire? The law gives three 3 considerations for the length of a contact lens prescription: It shall expire on the date specified by any laws in the state where the exam took place and the prescription was written, as long as those laws are not less than one year health exception noted below.
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