For those patients that have had a difficult time finding lenses that provide good enough vision for their lifestyle, there are RGP or “hard” contacts. These lenses do provide better vision in most cases, but are usually a bit more difficult to adjust to comfort wise. There are many patients in these lenses that are completely happy and unwilling to switch to soft contact lenses.
Silicone Hydrogel Lenses
Another category of lenses that are fairly new to the market are the silicone hydrogel lenses. These lenses can provide many times more oxygen to the eyes compared to other category of lenses. These lenses are actually providing some patients with a second chance to remain in soft contact lenses. If there is a significant risk of failing ocular health due to lack of oxygen to the cornea, then these lenses may provide the needed oxygen and therefore may extend a patient’s ability to remain in soft lenses.
Hybrid contact lenses combine the visual clarity and therapeutic aspects of Gas Perm lenses with the comfort of Soft Lenses.
Scleral Contact Lenses
Scleral lenses are large-diameter rigid gas permeable lenses. If you want to wear contact lenses but have had trouble wearing them in the past, or you’ve been told you are not a good candidate for contacts, scleral contact lenses may be the solution you are looking for. They are called “scleral” lenses because they completely cover the cornea (the clear dome of tissue that covers the colored part of the eye) and extend onto the sclera (the white part of the eye that forms the outer wall of the eye). Because of their size, they do not fall out and dust or dirt particles cannot get under them during wear. They are surprisingly comfortable to wear because the edges of the lens rests above and below the eye lid margins so there is no lens awareness.
Corneal Refractive Therapy (CRT)
Corneal Reshaping with CRT Contact Lenses can be an ideal vision correction method for active children, especially those involved in sports, or children who are genetically prone to having their nearsightedness progress year after year. The principle is similar to the use of a dental retainer used by an orthodontist to realign crooked teeth. The vision retainers are similar to contact lenses and are only worn at night while sleeping. They are then removed upon awakening to provide clear vision without using glasses or contact lenses! The retainers are comfortable and very easy to care for. CRT does not work on everyone and needs to be performed in a very exact and meticulous manner.