Why You Should Never Leave Your Sunglasses in the Car

Sunglasses left inside a car are exposed to high temperatures on a daily basis, especially during the summer months in Cyprus.

While it may seem convenient, prolonged exposure to excessive heat can affect both the lenses and the frame of your sunglasses, reducing their lifespan and performance.

HOW HOT DOES THE INSIDE OF A CAR GET?

A parked vehicle exposed to direct sunlight can reach extremely high interior temperatures. Even on a moderately warm day, temperatures inside the car can exceed 60°C (140°F), while surfaces such as the dashboard or compartments near the windshield can become even hotter.

These conditions are more than enough to cause gradual damage to the materials used in sunglasses.

WHAT HAPPENS TO SUNGLASSES WHEN THEY ARE EXPOSED TO HEAT INSIDE A CAR?

Modern sunglasses feature specialized lens coatings that help reduce glare, improve scratch resistance, and enhance visual comfort.

Continuous exposure to high temperatures can lead to:

• Damage to lens coatings
• Reduced optical clarity
• Appearance of cloudy spots
• Visual distortions
• Deterioration of polarized lenses

Even when the damage is not immediately visible, it can still affect visual quality and wearing comfort.

WHAT HAPPENS TO THE FRAMES?

Excessive heat does not only affect the lenses—it can also damage the frame. Plastic and synthetic frames, in particular, may warp when exposed to high temperatures for extended periods.

This can result in:

• Changes in the fit of the sunglasses
• Loosened screws and joints
• Reduced material durability
• Discomfort during wear

A frame that no longer fits properly can affect both comfort and the correct positioning of the lenses in front of the eyes.

CONCLUSION

Leaving your sunglasses inside a car may seem like a harmless and practical habit, but high temperatures can gradually damage both the lenses and the frame over time.

By storing your sunglasses properly and avoiding prolonged exposure to heat, you can preserve their quality, comfort, and protective performance for many years.

At Nicolaides Opticians, we are always available to provide expert advice on choosing, caring for, and maintaining your eyewear.

LOVE YOUR EYES!