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.

In patients who previously underwent refractive surgery or corneal inlay implantation, the small-aperture IC-8 Apthera IOL ...

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

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 ...

One of the biggest limitations of Galilean telescopes, with their combination of a convex and concave lens, was their narrow field of view. Galileo used them to survey the lunar surface, but he ...

Medically reviewed by Christine L. Larsen, MD Medically reviewed by Christine L. Larsen, MD Nearsightedness (myopia) and farsightedness (hyperopia) are common vision problems that affect how well you ...