Are cataracts hereditary?

If a parent or grandparent had cataracts, you might wonder, am I likely to get them too? Cataracts are incredibly common as we age, but the role of genetics isn’t always clear.

In this post, we’ll explore whether cataracts are hereditary, what other factors contribute to their development, and what you can do now to protect your eyesight for the future.

What are cataracts?

Cataracts occur when the lens of the eye becomes cloudy, making it harder to see clearly. This cloudiness develops slowly and can cause:

• Increased reliance on glasses
• Blurred vision
• Sensitivity to light
• Halos around lights at night
• Dull or faded colours

The only way to treat cataracts is through surgery, where the cloudy lens is replaced with a clear artificial lens.

So, are cataracts genetic?

Yes-genetics can play a role. While most cataracts are related to age, studies have shown that a family history of cataracts may increase your risk of developing them earlier than average.

If close relatives, like your parents, siblings, or grandparents, developed cataracts in their 50s or 60s, you may be more likely to experience them around the same age.

However, genetics is only one piece of the puzzle. Lifestyle, environmental exposures, and general health are also key factors.

Types of cataracts that may be hereditary

There are several types of cataracts, and some are more influenced by genetics than others:

1. Age-related cataracts (the most common type):

While mostly related to ageing, genetics can influence when they start and how quickly they progress.

2. Congenital cataracts:

These are cataracts that are present at birth or develop in early childhood. These are often inherited and can be linked to genetic conditions.

3. Early-onset cataracts:

If cataracts appear before the age of 50, it’s often worth looking into family history or underlying conditions.

Other risk factors to consider

Even if cataracts don’t run in your family, there are several things that can increase your risk, including:

• UV exposure: Too much sunlight without eye protection
• Smoking: A strong risk factor for cataract formation
• Diabetes: Increases your chances of developing cataracts earlier
• Steroid medications: Long-term use of corticosteroids
• Eye injuries or surgeries: Can trigger cataract formation

How do I know if I'm at risk?

If you have a strong family history of cataracts, it’s a good idea to:

• Get regular eye exams, especially after age 50
• Wear sunglasses that block UV rays
• Avoid smoking
• Maintain a healthy diet rich in antioxidants
• Manage chronic health conditions like diabetes or high blood pressure

Early diagnosis is key. Cataracts can be treated successfully at any stage, but you don’t have to wait until your vision becomes severely limited.

Can cataracts be prevented if they’re hereditary?

There’s no guaranteed way to prevent cataracts, even if you live a very healthy lifestyle. But taking care of your eyes can delay their development, and when the time comes, modern cataract surgery offers excellent results.

In private care, you’ll also have access to advanced diagnostic scans and premium lens implants, which can reduce your dependence on glasses.

Why choose Professor Paul Ursell?

As a leading cataract and lens specialist, Professor Ursell combines expertise with personalised care. He’ll take the time to understand your history, explain your options, and guide you through every step of treatment.

Whether you have a strong family history or you’re just beginning to notice changes in your vision, expert support is available.

Cataracts can be hereditary, but they are not inevitable. With early detection, a healthy lifestyle, and access to expert care, you can maintain clear vision well into the future.

If you're starting to notice visual changes—or simply want to understand your risk-take the first step today.

Take the suitability self-test to find out if cataract surgery is right for you.