Yes, cataracts can run in families, but having a parent or relative with cataracts does not mean you will definitely develop them

Some types of cataracts are inherited, passed down through genes from one or both parents. If your mother, father, or siblings have had cataracts, your own risk is higher than someone with no family history. However, inheritance is not a may provide. You may never develop cataracts, or you may develop them much later in life than your relatives did.

The relationship between genes and cataracts is complex. A genetic predisposition means your eyes may be more vulnerable to the damage that causes cloudiness, but other factors — age, sun exposure, certain medications, and medical conditions like diabetes — also play a role. Two siblings with the same genetic risk can have very different outcomes depending on their lifestyle and health history.

Key Takeaways

  • Congenital cataracts (present at birth) are often inherited, while age-related cataracts involve both genes and environmental factors.
  • If a close relative developed cataracts before age 60, your risk is higher, and you should mention this to your eye doctor.
  • You can reduce your risk by wearing sunglasses with UV protection, managing diabetes and high blood pressure, and avoiding smoking.
  • Regular eye exams starting in your 40s or 50s help catch cataracts early, especially if family history puts you at higher risk.

How genes increase your cataract risk

Certain genes affect how your eye lens proteins fold and stay clear. If you inherit a version of these genes from one or both parents, your lens may be more prone to clouding over time. The strength of this genetic influence varies. Some inherited cataracts develop in childhood or young adulthood; others do not appear until your 60s or 70s.

Congenital cataracts — those present at birth — are more directly inherited than age-related cataracts. A baby born with a cataract often has a parent who also had one, or the condition runs on one side of the family. These cataracts may be caused by a single gene mutation or by exposure to infection or toxins during pregnancy.

Age-related cataracts, which are far more common, involve a mix of genetic susceptibility and decades of exposure to UV light, oxidative stress, and other damage. Your genes load the gun, but environment pulls the trigger.

What to tell your eye doctor about family history

When you see an eye doctor, mention if any close relatives — parents, siblings, or grandparents — have had cataracts. Be specific about age if you know it. A parent who developed cataracts at 55 is more relevant to your risk than one who developed them at 85.

Your doctor will use this information to decide how often you need eye exams and what preventive steps make sense for you. If your family history is strong, your doctor may recommend more frequent screening or earlier baseline exams. They may also watch for other eye conditions that sometimes run alongside cataracts in families.

Steps you can take to lower your risk

Having a genetic predisposition does not mean cataracts are inevitable. Several habits reduce the risk or delay onset, even if you carry genes that make you vulnerable.

Protect your eyes from UV light. Wear sunglasses that block 99% to 100% of both UVA and UVB rays whenever you are outside for more than a few minutes. UV damage accumulates over a lifetime, so this matters at every age, not just in summer.

Manage chronic conditions. Diabetes and high blood pressure both increase cataract risk. If you have either condition, work with your doctor to keep blood sugar and blood pressure in target range. This protects your eyes and your overall health.

Do not smoke. Smoking roughly doubles the risk of age-related cataracts and may speed up their development. If you smoke, your eye doctor can refer you to resources that help with quitting.

Limit certain medications. Long-term use of corticosteroids (oral or inhaled) can increase cataract risk. If you take these medications regularly, discuss the risk with your doctor. Do not stop taking them on your own, but your doctor may be able to adjust the dose or find alternatives.

When to start eye exams if cataracts run in your family

The American Academy of Ophthalmology recommends that adults with no symptoms start regular eye exams by age 40. If you have a family history of early cataracts or other eye disease, your eye doctor may recommend starting earlier or screening more often.

If a close relative developed cataracts before age 60, mention this at your next eye appointment. Your doctor can establish a baseline and set a schedule that catches any changes early. Early detection does not prevent cataracts, but it means you and your doctor can plan for treatment before vision becomes a problem in daily life.

If you have already been diagnosed with a cataract, your siblings and adult children should know about it. They may want to mention it to their own eye doctors, even if they have no symptoms.

The difference between inherited and acquired cataracts

Inherited cataracts are caused primarily by genes passed from parent to child. Congenital cataracts fall into this category. Some run in families as an autosomal dominant trait, meaning you need only one copy of the gene from one parent to develop the condition.

Acquired cataracts develop over time due to age, injury, illness, or environmental exposure. Most age-related cataracts are acquired, though genes influence how quickly they form. A person with no family history can still develop cataracts from decades of sun exposure or from complications of diabetes.

Many cataracts are a mix: a genetic predisposition combined with years of environmental damage. This is why two people with identical genetic risk can have different outcomes.

What happens if you develop a cataract despite prevention efforts

If you develop a cataract, it does not mean you did anything wrong or that prevention failed. Cataracts are extremely common — most people develop at least a small one by their 70s. Having a family history straightforward means you may develop one earlier or more noticeably than someone without that history.

A cataract is not an emergency unless it is affecting your vision enough to interfere with driving, reading, or other daily activities. Your eye doctor will monitor it during regular exams and discuss surgery when the time is right. Cataract surgery is one of the most common and successful procedures in medicine.

Frequently Asked Questions

If my parent had cataracts, will I definitely get them?

No. Family history increases your risk, but it does not may provide you will develop cataracts. Some people with a strong family history never develop them, while others do. Age, sun exposure, health conditions, and lifestyle all play a role alongside genes.

Can cataracts skip a generation?

Yes. A genetic trait can be carried by a parent who does not show symptoms and passed to a child who does. This happens when the gene is recessive or when environmental factors in the parent's life prevented the cataract from forming.

At what age should I start worrying about inherited cataracts?

If your family history includes early cataracts (before age 60), mention it to your eye doctor at your next exam. Most age-related cataracts do not cause problems until the 60s or 70s, but knowing your risk helps your doctor plan appropriate screening.

Does wearing sunglasses really help if cataracts run in my family?

Yes. UV protection reduces cumulative eye damage and may delay cataract formation, even if you carry genes that make you vulnerable. It is one of the few preventive steps you can control directly.

Should my children be screened for cataracts if I have them?

Adult children should mention your cataract diagnosis to their own eye doctor, especially if you developed it before age 60. Children and teenagers do not usually need special screening unless they have symptoms or a very strong family history of congenital cataracts.