Did you know that you cannot blink before you are six months old, but after that, your eyes will blink more than 10 million times a year, and that the average blink lasts 300-400 milliseconds?
The term “eyeglasses” was first used by an Italian monk, Alessandro della Spina, who died in 1313. He was credited in his obituary not with creating the first pair of glasses, but with making eyeglasses widely available to the public.
Presbyopia is an eye condition that is inevitable as we get older. The lens in the eye hardens with age, and combined with progressive weakness of the muscle fibers surrounding the lens, the result is that it becomes more and more difficult to focus on objects that are up close.
If you’re not wild about the way you look in glasses, but can’t stomach contact lenses, consider rimless frames. With earpieces that connect directly to the lens, these glasses are barely noticeable on your face.
Kids shouldn’t have to skip sports or watch how they play because of fragile glasses. Sturdy plastic frames are a great option for young glasses wearers who need glasses that stand up to the challenges of childhood hijinks.
The eye is a complex mechanism that relies on the cornea and lens to work together to focus images on the retina. In people with impaired vision, the cornea may be too flat or too curved, distorting the image and making it appear out of focus.