According to the American Academy of Ophthalmology, a complete eye exam should include: Regular, thorough eye exams play a crucial role in maintaining and improving vision because they can catch potential eye problems early. protecting the eyes by using contacts carefully, wearing sunglasses and protective eyewear when needed, and taking breaks from computer screensĪccording 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.adopting a healthy lifestyle, including being physically active, eating a varied diet, and not smoking.Key recommendations from the National Eye Institute include: People can take steps to protect and enhance their vision. The pupils generally become smaller, which makes it more difficult for a person to see in low light conditions, such as driving at night. People can start developing presbyopia when they are in their 20s.Īs people age, the muscles that control the size of their pupils become weaker, which makes it more difficult for the eyes to adjust to changes in light. More than one-third of Americans experience this condition, which develops as the aging eye lens becomes less flexible and stiffer. The most common age-related change is presbyopia. Age-related macular degeneration: According to the NIH, this is the leading cause of blindness in people over 65.Glaucoma: If left untreated, glaucoma can cause vision loss and blindness.Cataracts: The National Institutes of Health (NIH) expect over 50% of people in America to develop cataracts by age 75.For example, children do not fully develop the ability to focus both eyes on one object at the same time until they are 7 years old.Ĭhildren’s eyes continue to change rapidly as they grow, and children who wear glasses should see an eye doctor each year to make sure their eyeglass prescriptions continue to meet their needs.Īdults’ eyes also change, although more slowly.Īlthough not all older adults will have eye problems, several eye conditions have associations with age, including: Usually, these differences are not due to illness.
PRISM: Eye doctors incorporate a prism into a lens to help correct problems with the eyes working together, such as one eye tilting inward while the other looks straight ahead.Ī person with any questions about what their prescription means should speak to their optician who can answer any questions and help explain the numbers.Įyeglass prescriptions change because people’s eyes change.AXIS: The axis notation tells lens makers where they should place the astigmatism correction in a lens.ADD refers to the strength that the optician needs to add to a prescription to magnify objects. ADD: Some people need a different prescription to see things that re close by.Cylindrical correction (CYL): Cylindrical correction is the second number and is only on prescriptions for people with astigmatism.Spherical correction (SPH): The spherical correction (SPH) refers to the lens strength needed to correct vision that affects the whole eye.Eye differences: It is common for people to have different qualities of vision in their left and right eyes, particularly those with astigmatism.OD stands for Oculus Dexter and refers to the right eye. OS and OD: On an eyeglasses prescription, OS stands for Oculus Sinister, which refers to the left eye.A large number: Whether a + or -, a large number indicates a stronger prescription.Shortsightedness is when a person can see close things but distant objects appear blurry.
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