Nearsightedness is the most common cause of blurry distance vision. In children its progression can be slowed; in adults it can be comfortably corrected. But high myopia also means a higher risk to the retina, so it’s worth keeping an eye on.
When to see a doctor the same dayThe image comes into focus in front of the retina: the phone in your hand is sharp, while the street, signs and anything far away blur.
What’s happening
In a nearsighted eye, images of distant objects come into focus in front of the retina — most often because the eyeball is elongated. Near vision is clear, distance vision is blurry. The longer the eye, the more the retina is stretched and thinned.
Focus in front of the retina. The eye is elongated but its optics are the same: the rays meet too early and reach the retina as a blurred spot. Near vision stays good.
Nearsightedness
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Eye exams explained
Refraction testing in children — with cycloplegia (drops that relax accommodation)
Measuring eye length (biometry) — the best indicator of progression in children
A dilated retinal exam, especially with high myopia
Follow-up for children every 6–12 months
Who treats it
A pediatric ophthalmologist or ophthalmologist; glasses and contact lenses are fitted by an optometrist.
treatment
The options fall into three groups: correction gives sharp vision, myopia control slows eye growth in children, and surgery frees adults from glasses. None of them shortens an eye that has already elongated — so the retina needs monitoring whatever you choose.
Diverging lenses move the focus back onto the retina. The safest, fully reversible option, suitable for any degree of myopia.
Who it suits
Good to know: regular glasses don’t slow eye growth; with high myopia they shrink the image, narrow the field of view and distort at the edges.
Compare vision with glassesDiverging lenses move the focus back onto the retina. The safest, fully reversible option, suitable for any degree of myopia.
Who it suits
Good to know: regular glasses don’t slow eye growth; with high myopia they shrink the image, narrow the field of view and distort at the edges.
Compare vision with glassesThe lens sits on the cornea and moves with the eye: a wider field of view and a more natural image size than with glasses.
Who it suits
Good to know: the main risk is keratitis, including Acanthamoeba: don’t sleep, swim or rinse lenses in water. Daily disposables are the safest.
0.01–0.05% drops once at bedtime slow the elongation of the eye. These are not the strong atropine drops used to dilate the pupil for an exam.
Who it suits
Good to know: the effect depends on the dose; light sensitivity and blurry near vision can occur. Treatment usually lasts at least 2 years and is tapered off as the doctor advises.
Spectacle lenses (DIMS, HAL) and soft daily lenses (MiSight): the center gives clear vision while the periphery signals the eye to stop growing.
Who it suits
Good to know: they slow progression by roughly 30–60% but don’t stop it, and only work when worn 10–12 hours a day.
Rigid gas-permeable lenses worn overnight temporarily flatten the cornea, so you see clearly during the day without glasses. In children they also slow eye growth.
Who it suits
Good to know: the effect wears off within 1–3 days without lenses; sleeping in lenses raises the risk of corneal infection, so strict hygiene and regular check-ups are essential.
The laser removes tissue from the center of the cornea to flatten it. PRK removes the surface layer, LASIK lifts a flap, and SMILE extracts a small lens of tissue through a 2–4 mm incision.
Who it suits
Good to know: the eye doesn’t get shorter and the retinal risk remains; dryness and night halos are common in the first months; after 40–45 you’ll still need reading glasses.
Surgery model, LASIK as the exampleA thin lens is placed inside the eye in front of your natural lens. The cornea isn’t thinned and your own lens stays in place.
Who it suits
Good to know: it’s intraocular surgery: rarely, raised eye pressure or early cataract; regular follow-up is needed. The lens can be removed.
Lens types, including ICLThe clear natural lens is replaced with an artificial one of the right power — just like in cataract surgery. It removes both the myopia and a future cataract.
Who it suits
Good to know: nearsighted eyes have a higher risk of retinal detachment after surgery; focusing ability is lost, so you’ll need reading glasses or a multifocal lens.
Lens replacement modelDaily 3-minute sessions looking into a device with red laser light. Trials in China showed slower myopia progression in children.
Who it suits
Good to know: cases of retinal damage have been reported and long-term safety isn’t established. Don’t use these devices on your own.
Nearsightedness
Options are listed from simplest to most serious. The “doesn’t work” label goes to remedies with no proven benefit.
Start here
Beyond this — your doctor decides
See how a nearsighted eye sees and what correction changes.
Nearsightedness
An elongated eye doesn’t get shorter again. Correction (glasses, contacts, surgery) gives clear vision, and in children further progression can be slowed.
No. Full correction doesn’t speed up progression, while undercorrection may even speed it up, according to research. Wear your glasses the way your doctor prescribed.
Usually after 18–21, once your prescription has been stable for at least a year. The decision is made after the cornea has been examined.
An elongated eye stretches the retina: thinning and tears are more common, and floaters and vitreous detachment happen earlier. The periphery is examined with the pupil dilated.
This material is for general information and doesn’t replace an in-person exam. Diagnosis and treatment are decided by a doctor after an examination.
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