Eye exams and focusing problems

Why an eye exam matters

An eye examination checks both how well you see and the health of your eyes. Some important diseases have no early symptoms. The examination schedule should reflect your age, family history, medical conditions, prior findings, and symptoms. ¹

Common focusing problems

Refractive errors occur when light does not focus clearly on the retina. Nearsightedness blurs distant objects; farsightedness can make near tasks difficult; astigmatism can blur or distort more than one distance. Presbyopia is the age-related loss of near focusing ability. You may notice squinting, eye strain, or trouble reading or using a screen. ²

How they are diagnosed

Vision testing and refraction help determine a prescription. The rest of the examination looks for other causes of symptoms. Dilation lets the doctor examine the retina and optic nerve more thoroughly. ² · ³

Usual treatment options

Glasses and contact lenses can correct many focusing problems. Surgery is an option for selected people after a careful assessment of their eyes and expectations. A prescription may improve focus without treating a separate eye disease. ²

When to seek urgent care

A sudden change in vision, a painful red eye, or new flashes, floaters, or a curtain in your vision should not be assumed to mean you simply need a stronger prescription. Seek urgent evaluation. ⁴ · ⁵

Questions to ask

• Is my blur explained by focusing alone, or is there another cause?
• What follow-up interval makes sense for my eyes and medical history?