Myopia, or nearsightedness, can be corrected with eyeglasses, contact lenses, or several types of refractive surgery, and it can be slowed in children through a growing list of treatments that include specialty lenses, low-dose eye drops, and even red light. The right approach depends on your age, how strong your prescription is, and whether the goal is simply seeing clearly right now or preventing the prescription from getting worse over time. Those two goals sometimes call for completely different tools.
Glasses and Standard Contact Lenses
For most people, the first and simplest correction is a pair of glasses with concave (minus-power) lenses. The lens shifts the focal point backward onto the retina so that distant objects come into focus. Glasses correct vision while you wear them but do nothing to change the eye itself, so the underlying myopia remains. Standard soft contact lenses work on the same optical principle and offer the same limitation: take them out, and everything goes blurry again.
That said, glasses are essentially risk-free, work at any prescription strength, and can be updated as your eyes change. They remain the default option for children, for people who are not candidates for surgery, and for anyone who simply prefers not to undergo a procedure. Contact lenses add convenience and a wider visual field but come with a small ongoing risk of eye infections, especially if you sleep in them or skip cleaning steps.
Refractive Surgery for Adults
If you want to reduce or eliminate your dependence on glasses, corneal refractive surgery reshapes the front surface of the eye so that light focuses correctly without an external lens. The three most common procedures are LASIK, PRK (and its newer variant trans-PRK), and small-incision lenticule extraction, often known by the brand name SMILE. All three use lasers to remove a precise amount of corneal tissue, but they differ in how they access the tissue and how the cornea heals afterward.
LASIK
LASIK is the most widely performed refractive procedure worldwide. A thin flap is created on the cornea’s surface, the underlying tissue is reshaped with an excimer laser, and the flap is laid back down. Early studies demonstrated that LASIK could effectively reduce myopia across a wide range of prescriptions, from about −2 to −20 diopters, with minimal complications.1PubMed Central. Excimer laser in-situ keratomileusis (LASIK) under a corneal flap for myopia of 2 to 20 D Recovery is fast, and most people notice dramatically improved vision within a day.
The flap, however, is also the source of LASIK’s main drawbacks. Creating it severs corneal nerves, which is why dry eye is the most common complaint after the procedure.2PubMed. The effect of nerve growth factor on corneal nerve regeneration and dry eye after LASIK For most patients the dryness is temporary, but it can persist for months or, in a minority, longer. In rare cases the cornea progressively thins and bulges after surgery, a complication called ectasia, which occurs in roughly 0.04% to 0.6% of LASIK-treated eyes depending on how it is defined and how long patients are followed.3PubMed Central. Complications of Refractive Surgery: Ectasia After Refractive Surgery
PRK and Trans-PRK
Photorefractive keratectomy, or PRK, was actually the first laser vision-correction procedure, predating LASIK. Instead of cutting a flap, the surgeon removes the thin outer layer of cells (the epithelium) and applies the excimer laser directly to the corneal surface. Because there is no flap, there is no flap-related risk, which makes PRK a better fit for people with thinner corneas or those in occupations where a blow to the eye could dislodge a LASIK flap.
The trade-off is a slower, more uncomfortable recovery. The epithelium has to regrow from scratch, which typically takes several days. A newer approach called trans-PRK (or streamlight trans-PRK) uses the laser itself to remove the epithelium in one continuous step rather than manually scraping it away. In clinical comparisons, trans-PRK patients healed significantly faster, reported less pain in the first few days after surgery, and recovered useful vision sooner than those who had conventional PRK.4PubMed Central. Early clinical outcomes and comparison between trans-PRK and PRK, regarding refractive outcome, wound healing, pain intensity and visual recovery time in a real-world setup The final visual outcome, however, tends to be similar between the two once healing is complete.
Small-Incision Lenticule Extraction (SMILE)
SMILE uses a femtosecond laser to carve a thin disc of tissue, called a lenticule, inside the intact cornea. The surgeon then pulls the lenticule out through a small incision, leaving most of the corneal surface undisturbed. Because no large flap is created, the anterior stromal fibers that contribute the most to the cornea’s structural strength remain in place.
In theory, that should leave the cornea biomechanically stronger than after LASIK. In practice, the picture is more nuanced. A matched comparison study found that the residual stromal bed thickness and the diameter of tissue removed had a bigger influence on postoperative corneal stiffness than how much anterior tissue was preserved.5PubMed Central. Corneal Biomechanics After SMILE, Femtosecond-Assisted LASIK, and Photorefractive Keratectomy: A Matched Comparison Study In other words, the amount of tissue you leave behind matters more than where exactly you take it from. Still, SMILE’s smaller incision does sever fewer corneal nerves than LASIK’s flap, and some surgeons prefer it for patients concerned about dry eye.
Options for Very High Prescriptions
Corneal laser procedures work by removing tissue to flatten the cornea. The stronger your prescription, the more tissue has to come off. Beyond roughly −8 to −10 diopters, many corneas simply do not have enough thickness for safe reshaping, and the risk of complications rises. Two alternatives bypass the cornea entirely.
Implantable Collamer Lenses
An implantable collamer lens, or ICL, is a thin, flexible lens placed inside the eye between the iris and the natural lens. It works like a permanent contact lens that you never have to remove. Because no corneal tissue is touched, the procedure is reversible: the lens can be removed or exchanged if your prescription changes or problems arise. Two-year follow-up data on the current-generation lens with a central hole (the V4c) showed it to be safe, effective, and predictable for correcting high myopia.6PubMed Central. Two-Year Outcomes of Visian Implantable Collamer Lens with a Central Hole for Correcting High Myopia The central hole allows fluid to circulate naturally, reducing the older-generation risk of elevated eye pressure or early cataract formation.
Refractive Lens Exchange
Refractive lens exchange is essentially the same procedure as cataract surgery, except the natural lens being replaced is clear rather than cloudy. The surgeon removes the eye’s own lens and inserts an artificial intraocular lens with the power needed to correct myopia. Long-term follow-up in highly myopic patients showed rapid and predictable improvement in unaided vision, but because it is an intraocular procedure, there are inherent risks of sight-threatening complications, making careful patient selection essential.7PubMed Central. Refractive lens exchange in high myopia: long term follow up In particular, people with high myopia already have an elevated risk of retinal detachment, and removing the natural lens may add to that risk. This procedure is most commonly offered to patients over 40, especially those approaching the age when cataracts would eventually need to be addressed anyway.
Night Vision After Corneal Surgery
One side effect that catches people off guard is how corneal surgery can change the way you see in the dark. After LASIK, halos around lights roughly doubled in severity in one study, and the increase correlated with higher-order aberrations in the cornea, particularly spherical aberration and coma.8PubMed Central. Night vision disturbances after successful LASIK surgery These disturbances happen because the pupil dilates in dim light and lets light pass through the transition zone between treated and untreated cornea. For most people the effect is mild and fades over months as the brain adapts. For a small percentage, halos and starbursts persist and can be bothersome when driving at night.
Modern laser platforms with larger optical zones and wavefront-guided or topography-guided profiles have reduced but not eliminated this issue. If you have large pupils or a strong prescription, your surgeon should discuss the likelihood of night-vision symptoms before you commit.
Slowing Myopia Progression in Children
Correcting blurry vision is only half the story. In children and teenagers, myopia tends to worsen year after year as the eyeball continues to elongate. Simply prescribing stronger glasses keeps the world in focus but does nothing to slow that elongation. A longer eye is a more fragile eye, so researchers have spent the last two decades developing treatments aimed at slowing the growth itself. Several now have solid evidence behind them.
Low-Dose Atropine Eye Drops
Atropine has been the most studied pharmacological option. At very low concentrations (0.01%), it slows myopia progression without the uncomfortable pupil dilation and light sensitivity that higher doses cause. In a randomized trial of Chinese children, the 0.01% atropine group progressed about a third less than the placebo group over one year, with myopia worsening by roughly −0.49 diopters compared to −0.76 diopters in the placebo group.9JAMA Ophthalmology. Safety and Efficacy of Low-Dose Atropine Eyedrops for the Treatment of Myopia Progression in Chinese Children: A Randomized Clinical Trial A separate trial in children who also had intermittent exotropia found a similar benefit, with the atropine group progressing about a quarter of a diopter less than placebo at one year.10JAMA Ophthalmology. 0.01% Atropine Eye Drops in Children With Myopia and Intermittent Exotropia: The AMIXT Randomized Clinical Trial
The effect is real but moderate. Atropine does not stop myopia progression, and its long-term impact on preventing sight-threatening complications later in life has not yet been established. Researchers are still working out the ideal concentration, whether higher doses like 0.05% offer a better balance of efficacy and side effects, and how long treatment should continue.
Orthokeratology
Orthokeratology, or ortho-K, involves wearing rigid gas-permeable contact lenses overnight. The lenses gently flatten the central cornea while you sleep, providing clear unaided vision during the day. But the myopia-control effect goes beyond simple reshaping. By changing the cornea’s curvature profile from center to periphery, ortho-K lenses alter where light focuses on the peripheral retina, which appears to send a signal to the eye that slows elongation.
Research on how corneal shape changes relate to axial elongation found that children whose corneas showed a greater shift in curvature between the central and peripheral zones experienced less eye growth over six months. In other words, the more the lens reshaped the overall corneal profile, the better it worked at controlling myopia.11Heliyon. Influence of central corneal curvature and e-value changes on axial elongation in children wearing orthokeratology lenses The downside is that ortho-K requires meticulous lens care and carries a small risk of infection, since the lenses sit on the cornea overnight.
Multifocal Soft Contact Lenses
Multifocal soft contact lenses take a different optical route to a similar end. Unlike standard lenses that correct only the central focus, multifocals are designed with concentric zones that produce different amounts of focusing power across the lens. The result is that while the center of the retina sees a clear image, the peripheral retina receives a different pattern of focus, reducing peripheral hyperopic defocus, which is thought to be a stimulus for eye growth.
Studies measuring the optical effect confirm that multifocal lenses produce significantly more myopic (or near-zero) defocus in the periphery compared to standard lenses, both when looking at distant and near targets.12PubMed Central. Peripheral Defocus with Spherical and Multifocal Soft Contact Lenses With a standard lens, the entire peripheral retina was seeing hyperopic defocus during near work. With the multifocal, peripheral defocus at many locations dropped to near zero. Several clinical trials have shown that this optical change translates into meaningfully slower myopia progression in children, though the magnitude of benefit varies across studies.
Repeated Low-Level Red-Light Therapy
One of the more surprising recent entries in myopia control is repeated low-level red-light therapy, or RLRL. Children look into a desktop device that emits red light at around 650 nanometers for a few minutes, typically twice a day. In a multicenter randomized trial, children receiving RLRL showed dramatically less axial elongation over 12 months compared to children wearing standard single-vision glasses: about 0.13 millimeters versus 0.38 millimeters.13PubMed. Effect of Repeated Low-Level Red-Light Therapy for Myopia Control in Children: A Multicenter Randomized Controlled Trial That difference is larger than what most other myopia-control interventions have achieved.
The mechanism appears to involve the choroid, the vascular layer behind the retina. Red-light therapy thickens the choroid, and this thickening is sustained over the course of treatment. The choroidal response may be driven by increased blood flow to the tissue.14PubMed Central. The effectiveness of red-light therapy on myopia control depends on its direct effect: a mediation analysis Because the research is still relatively young, questions remain about what happens after treatment stops, optimal dosing protocols, and long-term retinal safety. But the early results have generated considerable excitement in the field.
The Role of Outdoor Time
Before any drops or devices, the simplest intervention is just going outside. Epidemiological evidence consistently shows that children who spend more time outdoors are less likely to develop myopia or to progress as quickly if they already have it. The protective mechanism is thought to involve several factors: exposure to brighter, shorter-wavelength light stimulates retinal dopamine release, which appears to inhibit axial elongation.15PubMed Central. Protective effects of increased outdoor time against myopia: a review
The general recommendation floating around in clinical practice is that children should get at least two hours of outdoor time per day. This is not about exercise per se but about light exposure. Sitting in a park reading a book counts, as long as it is daylight. Indoor light, even from very bright lamps, is orders of magnitude dimmer than sunlight and does not appear to offer the same benefit. While outdoor time alone will not reverse existing myopia, it is the only “treatment” that is free, has no side effects, and benefits children’s health in every other measurable way.
Why Controlling Myopia Matters Beyond Blurry Vision
People sometimes ask why it matters if a child’s prescription climbs from −3 to −6 diopters, since glasses can correct either one. The answer lies in what happens inside the eye as it elongates. High myopia is associated with a cascade of structural complications that no pair of glasses can fix. These include retinal detachment, myopic maculopathy (damage to the central retina), choroidal neovascularization (abnormal blood vessels that can leak and scar), peripheral retinal degenerations, and an increased susceptibility to glaucoma and elevated intraocular pressure.16Advances in Ophthalmology Practice and Research. Complications of high myopia: An update from clinical manifestations to underlying mechanisms
Each additional diopter of myopia stretches the retina and choroid a little thinner and raises the cumulative risk of one or more of these problems showing up in middle age or later. This is the core reason that myopia control in children is not cosmetic or merely about convenience. Slowing progression, even by a modest amount, could reduce lifetime risk of serious eye disease. The relationship is not perfectly linear, but there is no known safe threshold below which elongation carries zero risk. Less is simply better.
Choosing Between Correction and Control
If you are an adult with stable myopia, the choice boils down to convenience versus risk tolerance. Glasses have zero risk but require a frame on your face. Contact lenses are more convenient but demand daily care and carry a low infection risk. LASIK or SMILE offer the most freedom from corrective wear, but you accept a small chance of dry eye, night-vision changes, or other complications. For very high prescriptions where corneal surgery is not safe, ICL implantation is a strong alternative that preserves the cornea, and refractive lens exchange can address both the prescription and future cataract development in older adults.
If you are a parent of a child whose myopia is worsening, the landscape is different. The conversation should include both optical correction for today and a myopia-control strategy for the years ahead. Many pediatric eye specialists now combine approaches, such as ortho-K lenses or multifocal contacts paired with low-dose atropine, along with strong encouragement to spend more time outdoors. Red-light therapy is generating real interest, though access varies by region and clinical guidelines have not fully caught up with the trial data. The evidence clearly supports acting sooner rather than later, since most axial elongation happens before the late teenage years.
Advances in Corneal Measurement
One underappreciated side of myopia management is how precisely the eye can now be measured. Before any refractive surgery, the cornea’s shape must be mapped in fine detail. Errors in that map can mean an over-correction or under-correction. Spectral-domain optical coherence tomography (OCT) has pushed measurement accuracy substantially forward, with modern fan-distortion correction algorithms reducing errors in estimated corneal curvature from about 4.6% to 1.6% and errors in asphericity from over 100% down to around 5%.17PubMed Central. Corneal topography from spectral optical coherence tomography (sOCT) For the patient, this translates into surgical plans that more accurately match the cornea’s true shape, which means better outcomes and fewer retreatments.
These measurement tools also matter for myopia control. Tracking axial length changes of a tenth of a millimeter over six or twelve months requires instruments sensitive enough to detect those shifts reliably. As devices improve, clinicians can tailor treatments more precisely, adjusting an ortho-K lens design or switching atropine concentrations based on objective growth data rather than just refraction checks.