Cataracts often develop gradually, so changes in vision may not be immediately noticeable. As the lens becomes cloudier, vision may become increasingly blurred, hazy or less clear, and you may gradually adjust to these changes without realising how much your eyesight has changed.
In this article, we look at how gradual cataract-related vision changes can go unnoticed and when it may be appropriate to have your eyesight evaluated.
Key Takeaways
- Cataract-related vision changes often develop gradually, making them easy to overlook.
- You may unconsciously change everyday habits to compensate for declining vision.
- Increasing difficulty with glare, contrast, reading or night driving can indicate that your vision has changed.
- An eye examination can establish whether cataracts or another eye condition is affecting your sight.
Why Are Gradual Vision Changes Hard to Notice?
Gradual vision loss can be difficult to recognise because there may be no obvious point at which your eyesight changes. Instead, you may adapt to reduced visual clarity over time without realising how much your vision has declined.
Cataracts develop as the natural lens of the eye becomes progressively cloudy. The changes may be subtle at first, and cataracts can affect one eye more than the other. As a result, you may notice little change in your overall vision even when one eye has become more affected.
Are You Compensating for Blurred Vision Without Realising It?
Adaptations can become part of your routine before you associate them with an eyesight problem. Pay attention to whether you have started:
- Need brighter lighting when reading or doing detailed work
- Hold reading material at a different distance to see it more clearly
- Sit closer to the television
- Increase the brightness of your phone or computer screen
- Avoid driving at night because of increased glare or difficulty seeing clearly
- Ask someone else to read small print
Individually, these habits do not necessarily indicate cataracts. However, if they are becoming more noticeable or are affecting your daily activities, an eye examination can help determine whether cataracts or another eye condition is contributing to the change in vision.
What Other Vision Changes Can Cataracts Cause?
Blurred vision is not the only change associated with cataracts. As the lens becomes cloudier, you may notice other changes in the quality of your vision, including:
Colours Appear Less Vivid
Colours may gradually look faded, dull or yellowed as the lens becomes cloudier.
Increased Glare and Halos
Headlights, sunlight and other bright light sources may produce more glare or halos than they did previously.
Reduced Contrast Sensitivity
Objects can become harder to distinguish from their surroundings, particularly in dim lighting or where there is little contrast.
Frequent Prescription Changes
Cataracts can alter how the eye focuses light, resulting in repeated changes to your glasses prescription.
How Are Cataracts Evaluated?
A comprehensive eye examination can determine whether cataracts are present and assess how they are affecting your vision. Your eye specialist may perform several tests, including:
- Visual acuity test: Uses an eye chart to measure how clearly you can see at different distances.
- Slit lamp examination: Uses a specialised microscope and bright light to examine the structures at the front of the eye, including the cornea, iris and lens. This allows the specialist to identify clouding or other changes in the lens.
- Dilated eye examination: Eye drops are used to widen your pupils so the retina, optic nerve and other structures inside the eye can be examined more closely. This also helps rule out other possible causes of changes in your vision.
The results help your eye specialist determine the extent of the cataract and whether monitoring or treatment may be appropriate.
Understanding Gradual Vision Changes with Dr Leo Seo Wei
Gradual vision decline can be particularly easy to dismiss because you often adapt one small habit at a time. When those adjustments begin adding up, an eye examination can help you understand whether your eyesight has changed more than you realised.
At Dr Leo Adult & Paediatric Eye Specialist Clinic in Singapore, Senior Consultant Ophthalmologist Dr Leo Seo Wei brings more than 20 years of clinical experience to the assessment and management of cataracts. Care is personalised around your vision, daily activities and individual eye health, with clear guidance on the options appropriate for you.
Arrange a consultation if gradual changes in your vision are becoming more noticeable or affecting how you manage everyday activities.
FAQs About Gradual Blurred Vision
Can cataracts affect one eye more than the other?
Yes. Cataracts can develop at different rates in each eye, so you may have clearer vision in one eye for some time. This difference can make an overall decline less obvious because the stronger eye may compensate.
Does having cataracts mean I need surgery immediately?
No. Cataract surgery is generally considered based on how much the cataract affects your vision and everyday activities rather than its presence alone. Your cataract surgeon can advise when treatment may be appropriate for you.
Can new glasses correct cataract-related blurred vision?
A new prescription may improve vision during the earlier stages of cataracts, but it cannot remove clouding within the natural lens. If vision continues to deteriorate despite updated glasses, further evaluation may be appropriate.
