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.
Once a scleral buckle is sutured onto the wall (sclera) of the eye, it stays in position forever. It may slightly change the shape of the eye and, after the eye has healed, a new pair of glasses may be necessary. On rare occasions, a scleral buckle placed all the way around the eye may cause pain. If the pain is severe and cannot be relieved with medicine, it may be necessary to loosen or remove the buckle. Rarely, an infection may occur. In such instances, the buckle may need to be removed from the eye. When the buckle is removed, the retina usually remains attached, but may detach. In most cases, however, the scleral buckle remains against the eye forever and causes no serious problem. It cannot be seen by others.