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What Are the Symptoms of a Wrong Eyeglass Prescription?

Your eyeglasses must have a precise prescription. When your vision is being tested, there is little room for mistakes. When you put on your new eyeglasses for the first time, you might have expected your vision to be sharper and clearer compared to the old pair. But if your vision is not what you expected, you need to know how to differentiate between the adjustment period and getting a new prescription altogether.

Understand the prescription

Before you leave the optometrist or the ophthalmologist’s premises, understand the prescription. OD means the right eye, OS means the left eye, and OU means both eyes. Numerical measurements called diopters (which either have a plus sign or a minus sign) indicate what kind of lenses you need. For example, OD+2.75 means that you have farsightedness and lenses which have a magnification of 2.75 can improve your vision. In case of nearsightedness, vision can be corrected with appropriate lens having negative diopters.

Symptoms

Fuzzed or blurred images are the most common signs of wrong eyeglass prescriptions. If the difference is small, you may not even realize it. But if there is a large variation in the power, if will manifest as eye strain, nausea, vertigo, and even dizziness.

There are no long-term effects of wearing eyeglasses with incorrect prescription. The vision will neither become worse nor will the eyes be damaged in any way. However you may have to face difficulties while driving. The dizziness may even affect your ability to operate machinery.

Certain eyeglasses such as bifocals have adjustment periods before a person becomes used to them. This period can last from days to even months. Common signs of difficulties in adjusting with new eyeglasses include feeling disoriented and having headaches.

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