Yes, you can get cataracts in your 20s. It’s uncommon, but it happens. While cataracts are overwhelmingly an age-related condition, with lens proteins typically starting to break down around age 40 and symptoms appearing after 60, several specific causes can cloud the lens decades earlier. Eye injuries, long-term steroid medications, diabetes, severe nearsightedness, and genetic conditions can all trigger cataract formation in young adults.
Why Cataracts Happen at a Young Age
A cataract forms when the proteins inside your eye’s lens clump together and lose their transparency. In older adults, this is simply wear and tear over decades. In someone in their 20s, something specific has usually accelerated that process. The lens is a living structure that depends on a precise chemical balance to stay clear, and anything that disrupts that balance, whether physical force, abnormal blood sugar, or chronic medication use, can cause clouding years or decades ahead of schedule.
Doctors sometimes call these “early-onset” or “secondary” cataracts to distinguish them from the age-related type. The clouding itself looks and behaves similarly, but the underlying trigger matters because it shapes how fast the cataract progresses and how it’s managed.
Eye Injuries Are the Most Common Cause
Traumatic cataracts are one of the leading reasons young people develop lens clouding. A sharp object like glass, metal, or wood that pierces the eye and reaches the lens can cause a cataract almost immediately. Blunt force, such as getting hit by a ball, a fist, or an airbag, transfers energy through the eye and can rupture or distort the lens capsule. The damaged lens fibers swell, and the proteins inside denature and lose their clarity.
Trauma doesn’t have to be dramatic. Chemical splashes can alter the composition of the lens fibers directly. Electrical shock produces a distinctive pattern of milky-white clouding or snowflake-like spots across the lens. Even prolonged exposure to ultraviolet radiation, the kind you accumulate from years of outdoor work without eye protection, can damage the front surface of the lens and eventually lead to cataract formation. Radiation therapy used to treat tumors near the eye or head is another recognized cause, producing clouding at the back of the lens over time.
Steroid Medications and Cataract Risk
Corticosteroids are one of the most well-documented medication-related causes of cataracts in young people. If you’ve been taking oral steroids for conditions like asthma, autoimmune disorders, or inflammatory bowel disease, your risk increases with both dose and duration. People who receive four or more oral steroid prescriptions per year have a measurably higher chance of developing cataracts, and cumulative daily doses above 7.5 mg carry roughly triple the risk compared to non-users.
Inhaled corticosteroids, the type used in asthma inhalers, also contribute at higher doses. Daily doses of 1,000 micrograms or more are associated with a significant increase in cataract risk, especially after five or more years of use. Oral steroids carry a greater risk than inhaled forms, but neither is risk-free at high doses over long periods. The type of cataract steroids produce is called a posterior subcapsular cataract, which forms at the back of the lens and tends to interfere with reading vision and cause glare problems relatively early.
Diabetes and the Sugar Buildup Problem
Type 1 diabetes, which is often diagnosed in childhood or adolescence, can cause cataracts in young adults through a specific metabolic pathway. When blood sugar runs high, an enzyme in the lens converts excess glucose into a sugar alcohol called sorbitol. Sorbitol doesn’t easily pass out of the lens, so it accumulates, drawing water in through osmotic pressure. This swelling separates the lens fibers, creates tiny vacuoles, and eventually breaks down the crystalline structure that keeps the lens clear.
In some cases, bilateral cataracts (both eyes at once) are actually the first sign that leads to a type 1 diabetes diagnosis. The process can be fast in poorly controlled diabetes, and research suggests that female adolescents may have higher levels of the enzyme responsible, potentially making them more susceptible. Keeping blood sugar well-controlled is the most effective way to slow or prevent this type of lens damage.
Severe Nearsightedness as a Risk Factor
High myopia, meaning severe nearsightedness, is a powerful and often overlooked risk factor for developing cataracts earlier than expected. The elongated shape of a highly myopic eye changes the environment around the lens, and studies consistently show that these eyes develop cataracts sooner than eyes with normal vision.
The type of cataract matters here too. In highly myopic patients, nuclear cataracts (clouding in the center of the lens) and posterior subcapsular cataracts are significantly more common than cortical cataracts. One study of highly myopic patients found nuclear cataracts in about 41% and posterior subcapsular cataracts in 26%, compared to 25% and 12% in a control group with normal eye length. If you have a strong glasses prescription for distance vision, particularly beyond -6 diopters, this is worth being aware of during routine eye exams.
Genetic and Congenital Causes
Some people are born with cataracts or carry gene variants that make them develop cataracts very early in life. Congenital cataracts are sometimes detected in infancy, but milder forms may not cause noticeable vision problems until the teens or 20s. Conditions like Nance-Horan syndrome, which involves cataracts along with dental and facial differences, and Lowe syndrome, a metabolic condition affecting the eyes, kidneys, and brain, are known genetic causes.
Down syndrome is another condition associated with earlier cataract development. Even without a named syndrome, isolated gene mutations affecting lens proteins or the lens capsule can cause cataracts to appear in young adulthood. If cataracts run in your family at unusually young ages, a genetic component is likely involved.
What Early Cataracts Feel Like
The symptoms of a cataract in your 20s are the same as in older adults, but you’re more likely to notice them because your baseline vision is otherwise sharp. Early signs include increased glare from headlights or bright lights, halos around light sources at night, and a sense that colors look slightly faded or washed out. Night driving often becomes harder before daytime vision is noticeably affected.
You might also find that your glasses or contact lens prescription seems to change more frequently than expected. Some people experience a temporary improvement in near vision, sometimes called “second sight,” as the cataract changes the way the lens focuses light. This isn’t a good sign; it means the lens structure is shifting. If you notice any of these changes, especially if you have one of the risk factors above, a dilated eye exam can identify a cataract even in its early stages.
Surgery and Lens Options for Young Adults
Cataract surgery is the same procedure regardless of your age: the clouded lens is removed and replaced with an artificial intraocular lens (IOL). The surgery is one of the most commonly performed procedures in medicine and has a high success rate. But being young when you have it done introduces a few considerations that don’t apply as much to older patients.
First, lens choice matters more when you have decades of active life ahead. Monofocal lenses provide the sharpest vision at one set distance, usually far away, meaning you’ll need reading glasses for close-up tasks. Multifocal lenses have zones for both near and far vision, reducing dependence on glasses, but they can cause glare and halos around lights, particularly at night. If you do a lot of night driving, monofocal lenses may be the better fit despite needing readers.
Second, younger eyes have a higher rate of a complication called posterior capsule opacification, where the thin membrane behind the implanted lens gradually clouds over after surgery. In some populations this occurs in over 50% of cases within two to three years. It’s not dangerous and is easily treated with a quick laser procedure, but it’s something to expect rather than be surprised by.
Protecting Your Eyes Now
Even if you don’t currently have any risk factors, protecting your lenses from UV damage in your 20s pays off over a lifetime. The National Eye Institute recommends sunglasses that block 99 to 100 percent of UVA and UVB rays, or those labeled UV400. Wraparound styles offer the best protection because they block light entering from the sides. Pairing sunglasses with a broad-brimmed hat further reduces UV exposure to the eyes.
If you take corticosteroids for any condition, ask about the lowest effective dose and whether non-steroid alternatives exist. If you have diabetes, consistent blood sugar management is the single most protective factor for your lenses. And if you play contact sports or work with power tools, flying debris, or chemicals, protective eyewear prevents the kind of traumatic injuries that cause cataracts in seconds. Many early-onset cataracts are tied to specific, identifiable causes, and several of those causes are preventable or manageable.