When ordering corrective lenses online, it's vital that you enter everything correctly particularly if you have a strong prescription. That means you can read a letter at 20 feet that people with "normal" vision can read at 200 feet, meaning you have very poor visual acuity. If you have myopia, the shape of your eye is distorted, and this can lead to blurry vision. The American Optometric Association recommends that you have an eye exam at least every 2 years if youre under 60 and every year if youre over 60. How to Read My Eyeglasses Prescription- Eye Prescription Calculator Ill explain it next. For more information on what this means along with additional insight, check out our full guide on how to read your glasses prescription. Key recommendations from the National Eye Institute include: According to the Centers for Disease Control and Prevention (CDC), 61 million adults in the United States face a high risk of vision loss, but only half of them have seen an eye doctor in the past year. Because contact lenses sit directly on the surface of your eye, they need to have the same curves as your eye. Could eyedrops replace reading glasses? This irregular curve can bend the light that enters your eye and affect the way it hits your retina. Correcting your vision with glasses or contact lenses, for both nearsightedness and farsightedness, may also help prevent: Astigmatism is an irregular curve in either the lens or the cornea of your eye. Is My Eye Prescription Bad? - What is Legal Blindness? - Vision Center EyeBuyDirect has a wide variety of budget frames starting at $6. Researchers say the drug aflibercept performed better in a clinical trial than bevacizumab in helping wean people off treatments for wet age-related, Medical News Today has strict sourcing guidelines and draws only from peer-reviewed studies, academic research institutions, and medical journals and associations. By contrast, 20/20 vision means the letter you can read from 20 feet can be read from 200 feet by people with normal vision. Eye Prescriptions (Meaning of SPH, CYL, AXIS) - Vision Center Its common for two different PD measurements to be present. As we age and the lens gets less flexible and can add less focusing power, we begin to need what is called add or bifocals to see near objects. Sunglasses. Its unit of measurement is called a diopter. Dont know your prescription? You can learn more about how we ensure our content is accurate and current by reading our. In general, the further away from zero the number on your prescription, the worse your eyesight and the more vision correction (stronger prescription) you need. He enjoys every second of life, but finds he is happiest at home watching Netflix or cheering on The Ohio State Buckeyes with his wife, three children, and two dogs. This is only an angular measurement of astigmatism and doesnt directly affect vision quality.