This type of test uses sound waves to map the structure of the eye. The sound waves travel through your eye, and the echoes form a picture. You'll get numbing eye drops before the exam ...

However, if your vision has changed, they'll recommend a comprehensive eye health exam instead. "During an online vision test, you'll use a smartphone, tablet and/or computer to assess your visual ...

Lydia Patrick is a Newsweek Life and Trends Reporter based in London, focusing on emerging trends, human interest stories, and women's issues. She previously uncovered a growing pattern of knife ...