In today’s optical illusion challenge, test your eyesight with a tricky number puzzle. Hidden among 3s and 4s is a single number 8—only those with sharp vision can spot it. This fun eye test evaluates ...

A visual acuity test is an eye exam that checks how well you see the details of a letter or symbol from a specific distance. Visual acuity refers to your ability to discern the shapes and details ...

Researchers have found that a simple eye test in first ... farsighted at around 6 or 7 years old. Future myopia was found to be reliably predictable by using the test to reveal little or none ...