Concave lenses correct myopia by being thin at the centre and thick at the edge. It diverges light rays entering the eye so they focus further back, landing directly on the retina instead of in ...

What is a mirror lens exactly? And have they got a new lease of life when used on mirrorless cameras? I've been trying them ...

(a) Name the defect of the eye in this figure. (b) What type of lens is used to rectify this ... When an object of height 4 cm is placed in front of a concave mirror at a distance of 30 cm away ...

Bausch + Lomb issued the recall after the company received reports of toxic anterior segment syndrome, or an inflammatory ...

Bausch + Lomb shares tumbled in intraday trading Friday, a day after the eye-care company announced a "voluntary recall" of some of its intraocular lenses due to safety concerns.

Most cases of TASS can be treated with steroids within a few days, although severe cases can lead to permanent damage to the cornea, the clear, outermost layer of the eye. Severe cases can also lead ...

We spent a full year testing nearly 40 X-mount lenses to figure out which ones make the most sense for Fujifilm shooters.

A new player in lens manufacturing, SongRaw, has entered the scene with a fast and budget-friendly 50mm F1.2 lens.

Though still only in the prototype stage, this flat lens could one day be used on space telescopes, and perhaps even on amateur telescopes. Engineers and astronomers at the University of Utah have ...

In the years I've been writing about smartphones, I've been seeing them get better and better at shooting cinematic-looking video footage. However, no matter how many Hollywood directors like ...

If you’re new to contact lenses, you may have questions about how to wear and care for them. It may not be as simple as slipping on a pair of eyeglasses. And it may take longer to get used to them.