Drink plenty of water to keep your eyes hydrated. Your eyes are made mostly of water, and they need to stay moist at all times to remain healthy. Dry eyes are more prone to eye problems and diseases. Keeping your body fully hydrated will ensure that your eyes stay moisturized.
Schedule an exam in the future. A lot of people simply aren't visiting their eye doctor as regularly as they should. You should have your vision checked at least once in your twenties and then twice in your thirties, but that's only if you don't have history or symptoms of vision problems.
If you still happen to smoke cigarettes, now would be the time to stop. In addition to causing lung damage, smoking damages your eyes. Long-term smokers tend to develop eye problems. By stopping smoking, you can cut the risk of optic nerve damage and cataracts.