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If your prescription does not contain your PD: 1  Ask to have it measured at an optical shop â some may charge a fee. 2  Contact an optical shop where you have previously purchased prescription glasses. 3  Your previous optometrist may have a record of your PD.  Alternatively, try measuring your own Pupillary Distance as explained below.
People who read this page also read: All optometrists have access to a wide range of eye drugs for diagnosing and treating eye diseases. They can sell or supply certain eye medicines to patients. Alternatively, they may give you a written prescription so you can obtain medicine at a pharmacy.