10 Signs You Need an Eye Exam

Blurry vision is one of the most common reasons people visit an eye doctor. If objects at a distance appear out of focus, you may be developing myopia (nearsightedness). If close-up tasks like reading become difficult, it could be hyperopia (farsightedness) or presbyopia if you are over 40. Blurry vision can also indicate more serious conditions such as cataracts, macular degeneration, or even diabetes-related retinopathy. Do not ignore persistent blur — even if it seems mild, it can worsen without treatment.

Recurring headaches, especially after reading, working on a computer, or driving, can be a sign of uncorrected vision problems. When your eyes struggle to focus, the muscles around your eyes overwork, leading to tension headaches. Astigmatism, hyperopia, and binocular vision disorders are common culprits. If you find yourself reaching for painkillers regularly due to headaches concentrated around the eyes, forehead, or temples, an eye exam may reveal the root cause and save you from chronic discomfort.

If you find yourself squinting to read signs, watch TV, or see faces across a room, your eyes are struggling to focus properly. Squinting temporarily improves focus by reducing the amount of light entering the eye and narrowing the field of vision, but it is not a solution — it is a compensating mechanism that indicates a refractive error. Children who squint frequently may not realize their vision is abnormal, making regular pediatric eye exams essential.

In our digital age, prolonged screen use causes digital eye strain (also called computer vision syndrome). Symptoms include tired, burning, or itchy eyes, difficulty focusing after screen time, and neck or shoulder pain. While the 20-20-20 rule (every 20 minutes, look at something 20 feet away for 20 seconds) can help, persistent symptoms may indicate an underlying prescription need, dry eye syndrome, or convergence insufficiency. An eye exam can determine if specialized computer glasses or treatment is needed.

Night driving becoming challenging is a significant warning sign. If oncoming headlights seem blinding, road signs are harder to read, or you notice starbursts or halos around lights, your eyes may be changing. Common causes include early cataracts (which scatter light), astigmatism, dilated pupils letting in too much light, or corneal irregularities. This symptom is especially important to address because it directly affects your safety and the safety of others on the road.

Halos — bright circles or rings that appear around light sources — can indicate several eye conditions. Cataracts cause the eye's natural lens to become cloudy, scattering light and creating halos. Glaucoma, particularly acute angle-closure glaucoma, can cause halos accompanied by eye pain and is a medical emergency. Corneal edema (swelling) from conditions like Fuchs dystrophy also causes halos. While halos can sometimes result from wearing outdated glasses, persistent halos warrant prompt medical evaluation.

Seeing two images of a single object (diplopia) should always be evaluated by an eye care professional. Monocular double vision (in one eye) may indicate astigmatism, cataracts, or keratoconus. Binocular double vision (when both eyes are open) can signal problems with the eye muscles, nerves, or even neurological conditions such as stroke or multiple sclerosis. New-onset double vision, particularly if sudden, requires urgent evaluation. Do not delay seeking medical attention for this symptom.

While occasional mild eye discomfort can be caused by tiredness or allergies, persistent or severe eye pain or a sensation of pressure behind the eyes should not be ignored. These symptoms can indicate glaucoma (increased intraocular pressure), optic neuritis (inflammation of the optic nerve), sinusitis affecting the eye area, or uveitis (inflammation inside the eye). Sharp, sudden eye pain accompanied by redness and vision changes constitutes a medical emergency.

Floaters are small specks, strings, or cobweb-like shapes that drift across your field of vision. They are usually caused by age-related changes in the vitreous (the gel-like substance inside the eye). While most floaters are harmless, a sudden shower of floaters, especially when accompanied by flashes of light or a curtain-like shadow over your vision, can indicate a retinal tear or detachment — a sight-threatening emergency. Flashes of light occur when the vitreous pulls on the retina and should always be evaluated promptly.

Many serious eye conditions have a genetic component. If close family members have been diagnosed with glaucoma, macular degeneration, keratoconus, retinal detachment, or even high myopia, your risk is significantly elevated. Glaucoma, for example, is 4-9 times more likely in people with a first-degree relative who has the condition. Early detection through regular eye exams is critical because conditions like glaucoma can steal vision gradually without noticeable symptoms until significant damage has occurred.