A mosquito watches you through a lattice of microscopic lenses. You stare back, fly swatter in hand, closely tracking the bloodsucker with your humble single-lens eyes. But it turns out that the way ...

A study on ground squirrels shows, not only do mitochondria produce bioenergy in the cone-shaped photoreceptors in the retina of the eye, they also act as micro-lenses that redirect light to the ...

Scleral lenses are large contact lenses that rest on the sclera, the white part of the eye, rather than the cornea. The lenses contain saline, so the cornea stays moist, which is helpful for people ...

Choosing new glasses involves lots of factors, including the type of lens you will purchase. If you have a strong prescription, you might consider aspheric lenses. There are many types of lenses for ...

Contact lenses make it easier for people with poor vision to work and carry out daily tasks. About 45 million people in the U.S. use them to correct their vision. Soft contact lenses are the same size ...