When cataracts cloud your vision

Cataracts develop when the natural lens inside your eye becomes cloudy, affecting the clarity and quality of your vision over time.

When cataracts cloud your vision

Cataracts develop when the natural lens inside your eye becomes cloudy, affecting the clarity and quality of your vision over time.

Cataracts affect millions of people worldwide

Cataracts are one of the most common causes of vision loss, particularly as we get older. Learn about the symptoms, causes, diagnosis and treatment options.

What is a cataract?

A cataract is a clouding of the eye’s natural lens. As the lens becomes less clear, light cannot pass through it as easily, which can make your vision appear blurred, hazy or cloudy. Cataracts usually develop gradually and are most common as we get older, although they can also develop for other reasons. You may notice that colours look less bright, lights seem to cause more glare or you need brighter light to read. Cataracts can affect one or both eyes. If changes in your vision are affecting your everyday life, an eye examination can help determine whether cataracts may be the cause.

Cataract symptoms can develop slowly and may not be obvious at first. Common signs include blurred or cloudy vision, increased sensitivity to bright lights, glare around headlights, faded colours and difficulty seeing clearly in low light. You may also find that reading, driving or other everyday activities become more difficult. Some people notice that their glasses prescription seems to change more often than usual. Cataracts do not usually cause pain, redness or sudden changes in vision. If you notice a gradual change in your sight, an eye examination can help identify whether cataracts or another eye condition may be responsible.

Ageing is the most common cause of cataracts. Over time, the proteins within the natural lens of the eye can change and cause it to become cloudy. However, cataracts can also develop at a younger age. Factors such as previous eye injuries or surgery, certain medical conditions, long-term use of some medications and prolonged exposure to ultraviolet light may increase the risk. Some people are also born with cataracts. Having one or more risk factors does not necessarily mean you will develop cataracts. An eye examination can help assess the health of your eyes and identify whether a cataract is affecting your vision.

Cataracts are extremely common, particularly among older adults, and are one of the leading causes of vision impairment worldwide. The chance of developing cataracts generally increases with age because changes in the natural lens build up over time. However, cataracts are not simply a problem that affects very elderly people and can sometimes develop earlier in life. Because cataracts usually develop gradually, you may adapt to changes in your vision without immediately realising that a cataract is developing. Regular eye examinations can help detect cataracts and other changes in your eye health.

Cataracts are diagnosed during a comprehensive eye examination. Your eye specialist will assess your vision and examine the structures of your eyes, including the natural lens, to look for signs of clouding. You may also have tests to check your visual acuity and assess the overall health of your eyes. Your symptoms, lifestyle and the effect of your vision on everyday activities may also be discussed. A cataract can often be identified during a routine eye examination, even before your symptoms become significant. If a cataract is found, your eye specialist can explain what it means for your vision and discuss whether treatment may be appropriate.

Yes, cataracts can be treated with cataract surgery when they begin to affect your vision and everyday life. During cataract surgery, the cloudy natural lens is removed and replaced with an artificial lens implant. The aim is to improve the clarity of your vision and help you see more comfortably. Cataract surgery is not usually needed simply because a cataract is present; the decision depends on how much it is affecting your sight and quality of life. Your eye specialist will assess your eyes and discuss your individual circumstances to determine whether cataract surgery may be suitable for you.

Most people recover quickly after cataract surgery, although your vision may be blurry for a short time while your eye heals. You may experience some mild discomfort, redness, dryness or sensitivity to light in the days following surgery. You will usually be given eye drops to support healing and help prevent infection. Many everyday activities can be resumed relatively soon, but your eye may take several weeks to fully settle. Your eye specialist will give you specific advice about driving, exercise and other activities based on your recovery. If you experience sudden vision changes, significant pain or other concerning symptoms, you should contact your eye specialist promptly.

Take the first step towards clearer, healthier vision

Request an appointment to understand your eyes, explore your options and find out what treatment may be right for you.

Take the first step towards clearer, healthier vision

Request an appointment to understand your eyes, explore your options and find out what treatment may be right for you.

See your best in 3 simple steps 

Your eye health matters. We make your journey from your first assessment to better vision clear, simple and personal

Step 1: Get in touch

Every pair of eyes is different, so the right treatment depends on your vision, eye health, lifestyle and goals. Get in touch with our friendly team to arrange your initial assessment and find out how we can help.

Step 2: We’ll meet 

At your assessment, we’ll take the time to understand your needs and examine your eyes in detail. We’ll explain your options, answer your questions and recommend the most suitable treatment for you. You’ll leave with a clear understanding of the next step and what to expect.

Step 3: Enjoy Freedom

Once your treatment is complete, you can look forward to the lasting benefits of clearer, more comfortable vision. Whether your goal is greater freedom from glasses, improved everyday vision or better eye health, we’re here to support you throughout your journey.

The difference better vision can make

Discover how the right eye care has helped our patients see and live with greater confidence.

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“From the telephone call to walking into reception, meeting the assistants, and finally seeing Dr Sven, it was such a wonderful experience. The staff are amazing, and Dr Sven is just as amazing. I found him on Google, and to whoever is reading this, book with him! Such a calm and lovely experience.”

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“Thank you so much for taking such great care of my mom. I really appreciate your willingness to help so quickly, and we are so grateful for your fantastic skill and expertise. ”

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“The level of skill, professionalism, flexibility, and service provided by Dr Sven, senior optometrist Shaarla, and the staff have been exceptionally high. Dr Sven and Shaarla went above and beyond to help diagnose the effects of the injury and provide initial treatment, using state-of-the-art equipment and methods. ”

We have replaced the images of real patients who provided these testimonials to protect their privacy.

Dr  Sven  Obholzer

MBChB (Stell), MMed Ophth (Stell), FC Ophth (SA)

I’m a specialist ophthalmologist with more than 14 years of experience in eye care and microsurgery. I trained at Stellenbosch University and Tygerberg Hospital in Cape Town, where I completed my Master’s Degree in Ophthalmology and Fellowship of the College of Ophthalmologists of South Africa. My main areas of interest include retinal surgery, cataract surgery and anterior segment surgery. As founder of the Namibia Eye Institute, I use modern surgical techniques and advanced technology. My focus is simple: to provide careful, evidence-based treatment that is tailored to each patient.