Night Driving After Cataract Surgery: What to Expect

Reduced night (or low-light) vision is one of the most common symptoms of cataracts—and a leading reason that many people reduce or even stop driving at night. So, if you’re about to go under the knife and have one or both cataracts removed, then the prospect of restored night vision is likely to fill you with joy.

Or is it…?

You’ve probably heard that night vision after cataract surgery doesn’t necessarily bring the crystal-clear clarity people hope for. Glare and halos are often reported, so what’s the likelihood that you’ll be affected? In short, are you realistic to hope to return to driving at night post-cataracts, or should you consign that part of your life to the history books?

Well, the news is good. Because most post-surgery light sensitivity issues are transient. So… Let’s explain further.

Cataract Surgery, IOLs, Halos, Glare, and Contrast Sensitivity

Having cataract surgery involves the surgeon making a small hole in the eye and the lens capsule to remove the lens and fit a new one. The new lens is called an intraocular lens (IOL), and there are many types of these

We’ll talk about the different IOLs and how they impact surgical recovery in a moment. But while the issues of halos and glare are well discussed, one aspect that’s often not addressed in such detail is the issue of contrast sensitivity—the ability to distinguish objects from their background. This will have diminished dramatically as your cataracts have evolved, but it happens very, very gradually. This means that many people don’t really notice the day-to-day decline, only that it suddenly becomes a bit harder to see, especially in low light.

One thing that so many people remark on almost immediately after a cataract operation is that everything appears so much brighter. For many, improved contrast sensitivity recovery is noticed within days, or even hours. However, the brain needs to relearn how to interpret the light signals without being impeded by cataracts, so expect improvement to continue over the recovery period (about 6-12 weeks) or even longer.

Contrast sensitivity plays a big part in how well you see in low light and driving in the dark. Equally important is the issue of halos and glare. Which brings us neatly onto the subject of IOLs.

Monofocal IOLs, Premium IOLs, and Post-Surgery Light Sensitivity

All types of IOLs have the potential to make you see halos around a light source and/or become sensitive to glare. This can be quite pronounced after surgery, and both are caused by the way the light travels through the eye. It’s taken years for your cataract/s to form, and suddenly the barrier to smooth light flow is restored instantaneously. This means the brain starts to receive uninterrupted signals that it hasn’t experienced for years—even decades—which, quite naturally, is a shock to the system.

In the same way as it takes muscle time to build and become strong, so your brain needs time to adapt and improve. Many report increased sensitivity to glare and halos after IOL insertion, and this is completely normal. During this time, you might struggle with distances or find that oncoming headlights almost blind you, which is why it’s really important to wait for clearance before you begin to drive again.

If you’ve had a monofocal IOL fitted, then recovery is likely to be swift. There have, historically, been more incidences of halo and glare problems with premium lenses because of their complexity. There are many types, each of which uses designs that split the light as it enters the eye. This is what massively increases the chance of a life without eyeglasses but increases the risk of light sensitivity. Until now, the glare-halo issue has been a direct trade-off for those who don’t want the hassle of wearing glasses.

We say, “until now”, because technology is moving forward at an incredible rate. There are now premium lenses, such as the PanOptix Pro Lens and advanced light-adjustable lenses (LALs), that dramatically reduce light sensitivity risks.

But whatever lens you choose, rest assured that the wonderful machine that is your brain generally adapts. Glare and halos become less of a problem and, in many cases, disappear altogether over time. Most people find that they can safely get back behind the wheel during the hours of darkness a few weeks after surgery.

The choice of lens will be dependent on your individual eye anatomy, any co-existing medical conditions, your surgeon, and—of course—your personal choice. The Modern Cataract Surgery Clinic leads the way in the latest technology and advanced treatments. 

Visit https://www.moderncataractsurgery.com/ and call today to discuss your needs.