Myopia Treatments: How to Choose and When to Use? - Review of Optometry
Center-distance daily wear contact lenses provide an alternative contact lens management option for reducing the progression of myopia. 26-31 The central portion of the lens provides the distance myopic vision correction while the peripheral surround reduces hyperopic defocus.
Factors to Consider in Choosing an IOL for Cataract Surgery
The lens uses the natural movements of your eye’s muscles to change focus. Toric lenses have extra built-in correction for astigmatism. These are available in monofocal and some presbyopia-correcting IOLs. Light-adjustable lens (LAL). This newer type of monofocal IOL is the only type of IOL that can be customized after surgery.
Having trouble reading this? How to choose the right glasses or contact
Cons: These lenses aren’t designed for far vision, so they aren’t helpful if you have myopia. In fact, when looking far, you’ll have to remove your readers or look over the top of the glasses. “Most wearers don’t like to constantly put on and take off their glasses,” said Chan. “Not only is it troublesome, it also reveals their
The Correct Material for Infrared (IR) Applications - Edmund Optics
The index of refraction ranges from approximately 1.45 - 2 for visible materials and 1.38 - 4 for IR materials. In many cases, index of refraction and density share a positive correlation, meaning IR materials can be heavier than visible materials; however, a higher index of refraction also implies diffraction-limited performance can be achieved with fewer lens elements – reducing overall
How to Choose the Best Lenses for Your Glasses - All About Vision
When buying spectacles, while the frame you choose is key to your appearance and your comfort, it's the spectacle lenses you choose that influence not only your appearance, but most importantly your vision, comfort, and safety.
