Have you ever gone to the optometrist for an eye test and were told your eye was shaped like a football? Subscribe to our newsletter for the latest sci-tech news updates. Or perhaps you've noticed ...

Have your eyes been playing tricks on you? You might want to sit down for this. The Twitter account Unusual Facts has gone certified viral — with more than 70,000 reactions — after posting ...

Please provide your email address to receive an email when new articles are posted on . Irregular astigmatism is a term often used to refer to any type of higher-order aberration that cannot be ...

Strictly speaking, the normal cornea is not a surface of revolution, since the curve of the horizontal plane is usually less than that of the vertical; but the difference is only regarded as a disease ...

Please provide your email address to receive an email when new articles are posted on . Many patients desire a refractive correction at the same time as cataract ...

Flora Hui works part-time in private practice as an optometrist. Angelina Duan works in private practice as an optometrist. The eye acts like a camera, capturing light through the front surface (the ...