Your Eyes Aren't Broken. The Headlights Are.
Car designers won the brightness war. Everyone else is losing.

Photo · The Drive
Squinting into oncoming traffic at 70mph isn't a sensitivity issue. It's an engineering choice someone made on your behalf.
Over the past decade, headlights got dramatically better at illuminating the road ahead — and dramatically worse at everything else. The LED and laser arms race gave us whiter light, sharper beams, more throw. It also gave us a highway full of people momentarily blinded by a passing Escalade.
Six in ten drivers now say headlight glare is a genuine problem. Nearly three-quarters of them say it's gotten worse. That's not a vocal minority. That's the road.
The cruel irony is that the technology works. Adaptive high beams, auto-leveling systems, camera-guided cutoffs — the hardware exists to make this better. But the standards that govern headlight aim in the U.S. haven't kept pace, and manufacturers optimizing for "impressive" at a dealership walkthrough aren't losing sleep over the guy in the opposite lane.
Your eyes adapt. The problem doesn't.
Somebody has to decide that blinding oncoming traffic is a design flaw, not a feature. Until they do, we're all just squinting and hoping.