Astigmatism occurs when the cornea—the transparent front surface of the eye—has an irregular shape, resembling a football rather than a perfectly round basketball. This uneven curvature causes light ...

Here’s how it works. The best iPhone lenses can quickly boost the quality of your smartphone photos and videos. Both the new iPhone 16 Pro models feature 5x telephoto lenses, while older iPhone ...

Join me as I pick the best lenses for astrophotography fans shooting a starry night sky, to suit a range of cameras and budgets. I think that the best lenses for astrophotography are vital for getting ...

Abstract: This paper presents a measurement system based on the transmission fringe deflectometry, which is designed to facilitate the rapid attainment of the free-form lens optical parameters, ...

We’ve always been big fans of Sony’s top-flight G Master lenses. They’re big and beautiful, but expensive, designed to suit the best Sony cameras for professionals. These lenses aim for the ultimate ...

The original Bifocal Lenses In Nearsighted Kids (BLINK) Study showed that having children with myopia wear high-add power multifocal contact lenses slows its progression. Now, new results from the ...

You can enjoy the latest lenses with clinically perfect optics, or seek out older lenses and optical formulas for images with character. Leica Summaron-M 28mm f/5.6 4.0 ...

The researchers found that the mean axial length and spherical equivalent refractive ... switched from multifocal to single-vision contact lenses, and myopia progression increased by −0.17 ...

Want to preserve the planetary parade or capture the Lynx constellation? The best lenses for astrophotography can help you take beautiful, breathtaking images of the night sky. If you're stepping ...

Treatment for allergic or irritant contact dermatitis may include home remedies such as cool compresses, moisturizers, and lukewarm baths. You may also require over-the-counter and prescription ...

Summary: New research demonstrates that high-add multifocal contact lenses significantly slow myopia progression in children, with benefits that persist even after discontinuation. The lenses, ...