What Is a Mature Cataract?
A mature cataract occurs when the natural lens of the eye becomes completely clouded, obstructing light from passing through effectively. Unlike early cataracts—where glasses may still offer some visual improvement—mature cataracts no longer respond to stronger spectacle lenses. Instead, patients often report feeling like their glasses are always dirty, constantly trying to wipe them clean to no effect.
At this stage, a referral to an ophthalmologist is typically recommended to discuss cataract surgery, which remains the most effective way to restore vision.
How Do Mature Cataracts Affect Vision?
As the cataract progresses, it significantly impairs your ability to see clearly:
- Vision becomes cloudy, blurry, or filmy
- Glare sensitivity worsens, particularly when driving at night
- Colours appear faded or dull
- You may notice halos around lights or double vision in one eye
- Reading, recognising faces, or enjoying hobbies becomes difficult
Cataracts may affect one or both eyes, often progressing at different rates. Even activities like crocheting, playing cards, or watching TV can become challenging.
Signs and Symptoms of a Mature Cataract
If you’re experiencing any of the following, it may be time to consult with your eye care provider:
- Persistent blurry or cloudy vision
- Colours seem muted or yellowed
- Halos or glare from headlights or lamps
- Frequent changes in glasses prescriptions with no improvement
- Poor night vision
- Double vision in one eye
- Feeling like your glasses are always smudged
While these symptoms may be mistaken for other eye conditions, a full eye exam will confirm whether cataracts are the cause.
Causes and Risk Factors
Cataracts form when the proteins in the eye’s lens begin to clump, creating cloudiness and preventing light from focusing clearly on the retina. Though age is the most common factor, several others contribute:
- UV exposure
- Smoking and alcohol consumption
- Diabetes and hypertension
- Obesity
- Use of corticosteroids or statins
- Previous eye injury or surgery
- Family history of cataracts
- Hormonal changes or HRT use
Over time, the cataract thickens and hardens, eventually becoming mature and unresponsive to optical correction.
Treatment: When to Consider Surgery
If mature cataracts significantly impair daily life—making it hard to read, drive, or enjoy hobbies—it may be time to consider cataract surgery.
During the procedure, the cloudy lens is removed and replaced with a clear, artificial intraocular lens (IOL). This restores the eye’s ability to focus light and improves vision dramatically.
Key points about cataract surgery:
- It is safe and routine, with over 3 million procedures performed annually in the U.S. alone
- Surgeries on each eye are done several weeks apart to prevent complications
- Most patients achieve 20/20 to 20/40 vision post-surgery
Your optometrist will assist you before and after the procedure. At Davida van der Merwe Optometrist, temporary reading glasses are offered during your healing period, followed by a complete eye exam and personalised prescription once your eyes have stabilised.
Note: Avoid using off-the-shelf readers long-term. They may be unbalanced, leading to unnecessary eye strain or fatigue.
Feel like your glasses are never clean? Vision increasingly foggy or frustrating?
Book an assessment with Davida van der Merwe Optometrist for expert advice on managing mature cataracts and referrals for safe, life-changing cataract surgery.
