Need new glasses? Online eye exams and vision tests offer a convenient way to get a glasses prescription. Doctors explain whether these services are worth trying.

Eye charts are designed to test visual acuity, or clarity of vision. Each chart design has limitations and advantages, depending on the clinical setting, patient profile, and diagnostic objective.

With one startup’s plan to offer low-cost online eye exams, it could soon be easy to get new glasses right from home without ever spending a minute in a waiting room.

It's important for your child to have regular eye exams. WebMD gives you information on what to expect when having your child's eyes checked and more.

January 18, 1908, is the anniversary of the death of Dutch ophthalmologist Herman Snellen, who created the familiar test for visual acuity And now a page from our "Sunday Morning" Almanac, January ...

Visual acuity is the clarity of vision when measured at a distance of 20 feet. Learn more about what it means, how it's tested, and more.

This week’s question was asked by: a close relative. QUESTION:Why is there that big E on the top of eye charts? ANSWER: We can credit Dr. Hermann Snellen, a Dutch ophthalmologist at the ...

'My eye doctor saved my life': Woman learns she has diabetes after an eye exam When she couldn't see the TV screen, this woman never suspected that untreated diabetes was to blame.

Britain's most determined but poorly-sighted WWII fighter pilot has died...after memorising the eye exam chart to enlist in the RAF. Aged just 19 Wallace Norman Adams knew his poor vision would ...

More than 60 students from throughout the Mansfield City Schools received free eye exams — and eyeglasses if needed — at a special clinic Wednesday and Thursday at Sherman Elementary School ...