Why You Should See an Eye Doctor Regularly - Even If You Think Your Vision Is Great

Even if you’re not squinting to see the clock, it doesn’t mean your eyes are in the clear: Many people have vision problems and don’t even know it, a new study published in Optometry and Vision Science suggests.

The researchers found that 58 percent of people with no known vision symptoms when they went in for a routine eye exam actually had at least one significant change noted by their eye doctor.

In the majority of the cases, the diagnoses were relatively minor, like the need for glasses or contacts or an updated prescription for their eye gear.

Still, walking around with an outdated prescription isn’t exactly harmless: You’re more likely to experience eyestrain, headache, and dizziness, according to lead researcher Elizabeth Irving, Ph.D., professor of optometry and vision science at the University of Waterloo.

The great coffee debate: to drink or not to drink

"To drink or not to drink coffee" has been the focus of many researchers in the past. Up to now, scientists are still in conflict on whether coffee is good or bad for the body.

Caffeine, which is the main ingredient of coffee, causes increased heart rate and blood pressure. Naturally, people would assume that increased consumption of coffee would be bad for one's health.

This idea was supported by previous studies associating heavy coffee drinking and heart disease.