The Consequences of Leaving Your Glasses in a Hot Car

Frame damage

The heat can damage the frames of your eyewear by causing the plastic to melt and warp. Typically, this type of heat exposure will flatten out the frames and cause them to get wider.

Warped frames can result in your glasses becoming ill-fitting, and you may find that your glasses are now harder to wear and may be constantly falling off.

Lens damage

 Another one of the consequences of leaving your glasses in a hot car is lens damage. Heat exposure can cause warping to your lenses as well, leading to poor vision quality.

You may also find that your lenses appear to be peeling or have permanent smudging on them. This can be caused by an excessive amount of heat exposure to your anti-reflective or scratch-resistant coatings.

Anti-reflective and scratch-resistant coatings can expand at different rates than the base lens, resulting in what looks like a web of tiny cracks. This is known as “crazing” and can cause everything around you to appear blurry.

Heat exposure can also affect the polaroid film used on polarized sunglasses, causing damage to the lenses.

Make a point to put your sunglasses in a case and carry them with you so they’re kept out of extreme heat. This simple change in behavior can help your sunglasses stay in excellent condition all summer long.