The fastest way to get a copy of your old eye prescription is to call the eye doctor who performed your last exam and ask for it. Federal law requires your eye care provider to give you a copy of your prescription, and most offices keep records for years. But depending on how long ago your exam was, how your provider stores records, and whether the prescription has expired, you may need to take a few extra steps or consider alternatives.
Your Eye Doctor Is Required to Give You Your Prescription
Under the Federal Trade Commission’s Eyeglass Rule, your eye care provider must automatically give you a copy of your eyeglass prescription at the end of your exam, whether you ask for it or not, and at no extra charge. A similar rule applies to contact lens prescriptions. These rules exist so you can shop around and fill your prescription wherever you choose. If you were not handed a copy at the time of your exam, or if you lost it, the prescription still belongs to you. You have the right to request it again.
In practice, retrieving it is usually as simple as calling the office. Most front-desk staff can pull your records within minutes and either read the prescription to you over the phone, email it, fax it, or mail a printed copy. Some offices will ask you to submit a written request or sign a medical records release form, but this is a formality that rarely takes more than a day or two to process.
How Long Your Doctor Keeps Records
If your last eye exam was recent, getting a copy is straightforward. But if it was several years ago, you might wonder whether the records still exist. Medical records retention requirements vary by state, but most states require health care providers to keep adult patient records for at least seven years from the date of the last visit. Some states require ten years, and a few have even longer retention periods. Pediatric records are often kept longer, sometimes until the patient reaches a certain age plus a set number of years.
Even after the legal minimum has passed, many practices hold onto records longer than required, especially if they use electronic health record systems where storage costs are negligible. If you had your exam at a large retail chain like LensCrafters, Pearle Vision, or a Walmart Vision Center, the corporate database may retain your information for a very long time. Independent practices that have closed or changed ownership can be harder to track down, but state optometry boards sometimes maintain information about where patient records were transferred when a practice shut down.
If your former eye doctor has retired or the practice no longer exists, try contacting your state’s optometry or ophthalmology licensing board. They may be able to tell you who took custody of the old patient files.
Getting Your Prescription Without Calling the Doctor
Calling the office is the most reliable route, but it is not your only option.
- Patient portal: Many eye care practices now use online patient portals where you can view your exam history, including past prescriptions. If you set up an account during a previous visit, log in and check for a section labeled “prescriptions,” “exam results,” or “visit summaries.” Retail optical chains and some larger health systems often have well-organized portals that store prescription data going back several years.
- Your old glasses: If you still have your most recent pair of glasses, any optical shop can measure the lenses using a device called a lensometer (also called a lensmeter or vertometer). This reads the exact power in each lens and gives you the sphere, cylinder, and axis values. The reading will match the prescription your glasses were made from. This is free at most optical shops and takes under five minutes.
- Contact lens boxes or receipts: Contact lens packaging prints the prescription values right on the box and on individual blister packs. If you still have old boxes, the power, base curve, and diameter are all listed. An old order confirmation email from an online contact lens retailer will also show these values.
- The retailer who filled the prescription: If you bought your glasses or contacts somewhere other than your doctor’s office, the retailer likely has a record of the prescription they filled. Online retailers such as Warby Parker, Zenni, and 1-800 Contacts keep order histories tied to your account. Brick-and-mortar shops like Costco Optical keep records as well.
One thing to keep in mind with the lensometer approach: the reading from your old glasses tells you what prescription was ground into those lenses, but it will not include your pupillary distance measurement, which is the distance between the centers of your pupils. You need that number to order new glasses. Your eye doctor’s records will have it, or you can have it measured in person at any optical shop. Some apps claim to measure pupillary distance using your phone camera, and while they can get reasonably close, an in-person measurement is more reliable, especially for progressive or multifocal lenses.
When Your Prescription Has Expired
Getting a copy of your old prescription and being able to use it are two different things. Eye prescriptions come with expiration dates, and most retailers will not fill an expired one. For eyeglasses, prescription expiration periods are set by state law and typically range from one to two years from the date of your exam. Contact lens prescriptions usually expire after one year in most states, though a few states allow two years.
The expiration exists for clinical reasons. Your vision can change over time, and conditions like glaucoma, cataracts, and macular degeneration may develop without obvious symptoms. A regular eye exam catches these problems early. Even in the absence of disease, the refractive error in your eyes can shift enough over a year or two that an old prescription no longer gives you the sharpest possible vision. Research on spectacle non-tolerance has found that relatively small changes in cylinder power and sphere power between old and new prescriptions are among the most common reasons people have trouble adjusting to new glasses, which underscores why accuracy matters when filling a prescription.
If your prescription has expired, you will need a new eye exam to get a current one. However, there are a few practical scenarios where having the old expired prescription is still useful:
- Reordering identical glasses as a backup: Some online retailers will let you enter an expired prescription at your own risk, though they may require you to acknowledge the expiration. Others enforce the expiration strictly.
- Traveling abroad: In many countries, prescription verification rules are less strict, and local opticians may be willing to make glasses from an old prescription or from a lensometer reading of your current pair.
- Providing a starting point for a new exam: Bringing your old prescription to a new eye doctor gives them useful baseline information, especially if you are seeing a provider for the first time and they do not have your history.
Online Vision Tests and Prescription Renewals
If your old prescription has expired and you cannot easily get to an eye doctor, online vision test services have become an increasingly popular alternative for getting a renewed prescription. Companies like Visibly and 1-800 Contacts’ ExpressExam offer tests you can take from home using your computer and smartphone. These are typically designed for straightforward prescription renewals in people who already wear glasses or contacts and whose prescription has been stable. A licensed eye care professional reviews your results remotely and, if appropriate, issues a new prescription.
These services have real limitations. They measure your refractive error, which is the optical correction your eyes need, but they do not examine the health of your eyes. They cannot screen for glaucoma, retinal disease, or other conditions that a comprehensive in-person exam would catch. Most online services will not work for people with complex prescriptions, significant astigmatism, or certain health conditions like diabetes that affect the eyes. They are also not available in every state, as some states restrict or prohibit telehealth-based vision prescriptions.
For a straightforward renewal when you know your prescription has barely changed and you just need a current date on the paperwork, these services can save time and money. But they are not a substitute for periodic in-person exams, and most eye care professionals recommend a comprehensive exam at least every two years for adults, or annually if you are over 60, wear contact lenses, or have risk factors for eye disease.
Transferring Records Between Providers
If you have switched eye doctors, your new provider can request your records from your previous one. This is handled through a standard medical records transfer. You will typically sign a release form at your new doctor’s office authorizing the transfer, and the two offices handle the rest. The old practice is required by law to comply with the transfer request, though there may be a small copying or administrative fee, especially for paper records. Electronic records are usually transferred at no charge.
Keep in mind that what gets transferred is your full exam record, not just the prescription. This includes notes on the health of your retina, optic nerve, intraocular pressure measurements, and any diagnoses. All of this is valuable context for your new provider, especially if they need to monitor a condition or compare findings over time. If you are only looking for the prescription itself and do not need the full record, calling the old office directly and asking for just the prescription is faster.
What Your Eye Prescription Actually Contains
If you have a copy of your prescription in hand and are trying to make sense of it, here is what the key values mean. An eyeglass prescription lists values for each eye separately, usually labeled OD (right eye) and OS (left eye). The main numbers you will see are:
- Sphere (SPH): The main power correction. A negative number means you are nearsighted. A positive number means you are farsighted. The unit is diopters, but you do not need to understand the optics behind that to use the number.
- Cylinder (CYL) and Axis: These correct for astigmatism, which is when the front of the eye is curved unevenly. Cylinder is the amount of correction, and axis is the angle at which it is applied. If you do not have astigmatism, these fields are blank or marked as zero.
- Add: The additional magnifying power for reading, used in bifocals and progressives. If you are under 40 and do not need reading glasses, this field is blank.
- PD: Pupillary distance, measured in millimeters. Some prescriptions include it, and some do not. If yours does not, you will need it measured separately before ordering glasses online.
Contact lens prescriptions include a few additional values specific to the lens fitting: base curve, diameter, and the brand or specific lens type your doctor prescribed. These are not interchangeable between brands because each contact lens design sits on the eye differently, so even if the power is the same, switching brands requires a fitting.
Special Situations That Complicate Things
A few circumstances make retrieving an old prescription harder than the standard process described above.
If your exam was performed at a military installation or Veterans Affairs facility, you may need to go through the VA medical records request process or the Department of Defense’s health records system. These records are maintained through federal systems rather than private offices, and the request process can take longer. The VA has an online portal (My HealtheVet) where you can access some records directly, and you can also submit a records request through the facility’s release-of-information office.
If your exam was performed in another country, the prescription may use a different format. Many countries use the same notation (sphere, cylinder, axis), but some older prescriptions from certain regions may express cylinder in positive rather than negative form, or vice versa. The correction is the same optically, but the numbers look different on paper. Any optician or eye doctor can convert between the two conventions.
If you had refractive surgery like LASIK at some point after your last glasses or contact lens prescription, that old prescription is no longer relevant to your current vision. Your eyes were surgically reshaped, so the old numbers describe an optical system that no longer exists. If you need glasses after LASIK, whether for residual refractive error or for age-related reading difficulty, you need a new prescription based on your post-surgical eyes.
When Getting an Old Prescription Is Not Worth the Effort
Sometimes the practical answer is to skip the retrieval process and just schedule a new exam. If more than two years have passed since your last visit, your prescription has almost certainly expired, and even if you manage to get a copy, most reputable retailers will not fill it. If you are experiencing new symptoms like blurred vision, headaches, eye strain, or floaters, those are signs that something has changed and your old prescription would not address the problem anyway.
Eye exams at retail optical chains typically range from $50 to $100 without insurance, and many vision insurance plans cover an annual exam in full. If cost is a barrier, community health centers and optometry school clinics often offer reduced-fee exams. Organizations like the Lions Club and state programs for low-income residents may also provide free or discounted eye care in your area. Compared to the time spent tracking down records from a closed practice or navigating bureaucratic hurdles for a prescription that may no longer serve you well, a fresh exam is sometimes the simpler path.