Convex lenses are constructed from transparent material and attached to two different surfaces. One of these surfaces must be curved. When these spherical surfaces bulge outwards, it is called a convex or bi-convex lens. A piece of glass wi
Affecting nearly 5 to 10 percent of the United States population, farsightedness can be found in both children and adults. Have you ever brought an object up to your face but realized that you could not identify or perceive the smallest det
Everyone knows that eyeglasses allow people to see clearly. However, few really understand how glasses actually work. Vision occurs when light enters the eye and lands on the retina, a light-sensitive membrane located at the back of the eye
Diabetic retinopathy is a primary cause of adult blindness in the US. The disease refers to a condition that affects your eye's back area, responsible for converting light into images.
This area is called the retina and may be affected b
Millions of Americans must contend with cataracts, and the odds of you contracting them will only increase as you grow older. Deciding when to have surgery is something that nearly every cataract patient will have to deal with at
Eyesight is one of the most essential senses that we possess. Our perception of the world around us is significantly diminished if our eyesight is compromised. Taking proper care of our eyes is imperative, and an awareness of how