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Many people associate cataracts with blurry vision, but one of the earliest signs often appears after sunset. If you find it increasingly difficult to drive at night, notice halos around lights, or feel uncomfortable with bright headlights, it may be time to have your eyes examined.

What Is a Cataract?

A cataract develops when the eye’s natural lens gradually becomes cloudy. In a healthy eye, the lens focuses light clearly onto the retina, producing sharp vision. As the lens becomes cloudy, light scatters inside the eye, leading to blurred vision, glare, and reduced contrast.

Early Signs You Shouldn’t Ignore

Cataracts usually develop slowly, and symptoms may not be obvious at first. Common warning signs include:

• Difficulty seeing clearly at night
• Increased sensitivity to bright lights
• Halos around headlights or streetlights
• Blurred or cloudy vision
• Trouble reading road signs after dark
• Difficulty recognizing faces in low light
• Colors appearing dull or faded
• Frequent changes in eyeglass prescription

Why Is Night Vision Affected First?

During the day, natural sunlight helps compensate for mild vision changes. At night, however, there is less ambient light, making it harder for the eyes to focus. The cloudy lens scatters incoming light, causing glare and reducing contrast, which makes nighttime activities like driving more challenging.

Who Is at Higher Risk?

Although cataracts are commonly linked to ageing, they can also develop earlier due to:

• Diabetes
• Long-term steroid use
• Previous eye injuries
• Excessive UV (sunlight) exposure
• Family history of cataracts
• Smoking

Can Cataracts Be Treated?

In the early stages, doctors may recommend:

• Updating your eyeglass prescription
• Using brighter lighting for reading
• Wearing anti-glare lenses
• Limiting night driving if vision is affected

However, these measures only help manage symptoms temporarily and do not stop cataracts from progressing.

When Is Surgery Needed?

If cataracts begin interfering with daily activities such as reading, driving, or working, cataract surgery is considered the most effective treatment.

During the procedure, the cloudy natural lens is removed and replaced with a clear artificial intraocular lens (IOL). Modern cataract surgery is quick, safe, and highly successful, with most patients experiencing significant improvement in vision, reduced glare, and better night-time visibility.

When Should You See an Eye Doctor?

Schedule an eye examination if you experience:

• Persistent difficulty seeing at night
• Halos around lights
• Excessive glare from headlights
• Blurred vision that worsens over time
• Frequent changes in vision

Early diagnosis allows timely treatment and helps prevent vision from deteriorating further.

Final Thoughts

Night vision problems are not always a normal part of ageing. If bright lights seem unusually dazzling or driving after dark has become difficult, cataracts could be the underlying cause. Regular eye check-ups can help detect cataracts early and ensure timely treatment, allowing you to maintain clear vision and confidence in your daily life.

Disclaimer: This article is for informational purposes only and should not be considered a substitute for professional medical advice. If you notice persistent changes in your vision, consult a qualified ophthalmologist for proper evaluation and treatment.