Is this time different? "It better be," warns BofA strategist Michael Hartnett. By one metric, stock valuations are beyond ...

Her eye chart tests showed improvement. It took a radical experiment to find out why her reality wasn’t matching up.

A woman says she recently discovered that you’re not supposed to randomly guess the letters on an eye chart at the optometrist.

It also allows veterinarian ophthalmologists to design an eye chart for dogs that will help us learn how a dog’s vision declines with age.

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 doctor Herman Snellen (Dutch, 1834–1908) developed the most commonly used eye chart in the 1860s. The now iconic Snellen chart contains 11 rows of capital letters decreasing in size as the eye ...

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.