WASHER ONLY. View All. Spiders are similar to top rings or shade risers in that they are used to reinforce and spread the parts of a lamp or fixture that provide shading. Spiders, however, are generally used to fortify either plastic or glass cylinder-style shades. Though somewhat rare on older lamps, these lamp parts are often found on modern, minimalist-styled light fixtures. We currently offer a brass plated steel spider that is designed for 4â diameter shades or cylinders.
A scleral lens is a specialized contact lens used to manage a variety of eye conditions. It is made of plastic that is clear and rigid, yet allows the eye to breathe, keeping it healthy. A scleral lens is slightly larger than most soft contact lenses and is designed to rest on the white (less sensitive) part of the eye called the sclera. That is why itâs called a scleral lens! This unique design makes the lens very comfortable to wear, all day long.
I have fitted hundreds of individuals in scleral lenses, and the cost aspect has been a sticking point for only a small percentage of them. Once they have had the opportunity to try on a lens, feel the comfort, and see the vision, the price of the lens becomes secondary.ight now, scleral lenses are a niche lens for a small population of patients, but that is up to us as practitioners to make them more of a mainstream option. As mentioned previously, GPs made up a substantial percentage of contact lens wearers as recently as 25 years ago.