If you have trouble perceiving distance, a depth perception test can determine how both of your eyes work together to see in three dimensions. This can be done at home or in an optometrist’s office.

The best speed test apps can help ensure you really are getting all of the data you pay your internet service provider (ISP) for each month. However, they can also indicate whether or not it’s ...

Most people with diabetes should test their blood sugar (or blood glucose) levels regularly. Knowing the results lets you adjust your strategy for keeping the disease in check. Research shows that ...

We use Ookla’s Speedtest to measure your current internet speed. To get the most accurate results, use a laptop connected to your router with an ethernet cable. If connecting through WiFi, make sure ...

Curious about how fast your internet actually is? These quick internet tests take mere seconds to show you what speeds you're actually getting. Trisha Jandoc is an associate writer at CNET ...