Swim goggles are an essential item for the competitive swimmer and often a much preferred item for recreational swimmers as well. They help you to maintain clarity of vision, and they protect your eyes from being irritated by harsh pool chemicals. The problems with swim goggles is that they can fog quickly, obstructing your view. Don't worry. There are some very simple tips that you can follow to keep your goggles bright and clear.
Immerse your goggles in the pool water for about five minutes before swimming. This helps them to adjust to the temperature of the water and can reduce the likelihood and severity of fogging.
Remove your goggles and spit into each of them if they begin to fog while you are swimming. Tilt each goggle so that the spit rolls around. Tip the goggles so that the excess spit runs out of them before you put them back on.
Prepare your goggles ahead of time if you are still having problems with fogging. The simplest form of preparation is to squirt one tiny drop of baby shampoo into each goggle and rub it around to make sure the lenses are coated well. Rinse lightly, but don't rub the lenses as you rinse so that a light coating of the shampoo remains on the lenses. Make sure to use a gentle baby shampoo, as harsher products may sting in the event of the shampoo coming into contact with your eyes.
Purchase an anti-fog spray if all else fails. These sprays generally cost from £2 to £6, but they usually work well and are worth it. You can find anti-fog sprays at dive shops and outdoors/outfitting businesses.