The Tecnis Symfony OptiBlue IOL, a violet light-filtering extended depth of focus lens implant, yielded positive vision ...

A customized scleral lens offers excellent visual acuity and comfort in patients with irregular astigmatism and complex corneal conditions.

A custom scleral lens system improves visual acuity and comfort in patients with a variety of corneal conditions, research ...

Zenlens custom scleral contact lenses improved visual acuity and yielded more than 11 hours of comfortable wearing time, ...

Experiments with convex lenses eventually led to what people use for farsightedness today. Concave lenses came after convex lenses and were used to correct nearsightedness. Nicholas Krebs is credited ...

A plano-concave lens is a lens with one side being flat and the other side being concave. It is characterized by being thin in the center and thick at the edges, and can make parallel light rays ...

So, the glasses lens, the cornea and the eye’s lens work together to bend the light just right. A glasses lens can curve inward–called concave – to fix near-sightedness.

“A mirror, a concave mirror, a convex mirror, and a double-convex lens. A mirror and a concave mirror are what we call a katoptron and an enoptron. A convex mirror is what we call a phanarion. As for ...

Eyebright Medical Technology has announced that its phakic intraocular lens (IOL), the Loong Crystal PR, has received Class III Medical Devices Certificate from the National Medical Products ...

This lens offers a tailored solution for individuals with varying degrees of myopia, ensuring optimal visual outcomes and enhancing patient satisfaction. Constructed from an advanced balanced acrylic ...

Astronomers have constructed telescopes of every kind - massive observatories designed to pick up faint traces of light across space.