This is a hard, oxygen permeable material that provides crisp optics to a distorted cornea. This is a covalently bonded soft and hard material that provides the visual benefits of a hard contact lens with the comfort of a soft contact lens. For those who utilize this type of lens, conventional (or off-the-shelf) lenses can be prescribed or we can custom order almost any prescription needed. A soft contact lens typically drapes the eye like a wet blanket, instead of providing crisp vision. – In the realm of medically necessary contact lens indications, most patients don’t get their best visual benefit from soft contact lenses. What are the different types of medically necessary contact lenses? Soft contact lenses Their feedback has been characterized by a marked relief of eye discomfort and overall improvement in daily life (Segal, et.al., 2003)(Romero-Rangel, et.al., 2000). PScleral lens wearers report that their life has significantly improved with the use of these lens. Scleral contact lenses combat this by providing a constant source of fluid to the eye while protecting the eye from the blinking eyelids. Someone with dry eye disease typically lacks a proper tear film (the eye’s source of lubrication), which leads to friction across the highly sensitive cornea every time think blink. People that would most benefit from scleral contact lenses are people with rheumatological diseases (such as Rheumatoid Arthritis or Sjogren’s syndrome) or ocular graft versus host disease.
Scleral contact lenses (see below for details) can provide a new “environment” for the very dry, uncomfortable eyes. Uses for medically necessary contact lenses include the treatment of severe dry eye disease and eye discomfort. With the lens, these patients become eligible for normal DMV driving licenses. The use of medically necessary contact lenses can decrease glare, improve warped vision and improve visual acuity from an average best corrected vision of 20/70 to an average of 20/32 (Severinsky, 2010). These people tend to be ineligible for unrestricted driving privileges.
Patients with these conditions tend to have “hard-to-fit” eyes or struggled with soft contact lenses, and therefore benefit the most dramatically from medically necessary contact lenses. In some cases, corneal scarring can warp and distort the vision. There are corneal irregularities, such as Keratoconus or Pellucid Marginal Degeneration, which lead to a warping of the cornea.Ĭorneal surgeries – such as corneal transplants – can also result in an irregular corneal surface. This structure needs to be a smooth, regular surface otherwise the world is seen as distorted. The cornea, the front surface of the eye, or the clear window we look through to see the world. This is called high aniosmetropia and insurance companies offering this coverage require a difference of 3.00 diopters between each eye. Sometimes, people have a larger difference between the prescription in each eye, which compromises the quality and size of the images that are seen. Some insurance companies offer extra coverage in these cases, but they generally require prescriptions over 10.00 diopters. If you have high enough glasses prescription, you may be a candidate for special contact lens benefits. The higher the prescription in glasses, the quality of vision provided by your glasses can begin to decrease. Who is a candidate for medically necessary contact lenses? High Prescriptions Medically necessary contact lenses are prescribed to provide vision superior to glasses or soft contact lenses. These patients usually face two options: undergo invasive surgery such as corneal transplantation or find the best available custom contact lens correction. To put things in perspective, some patients cannot see anything on the letter chart even with glasses or soft contact lenses. However, “medically necessary contact lenses” are prescribed to provide vision that is better than glasses or soft contact lenses. Most contact lens wearers think their contact lenses feel “visually” or “medically” necessary. Having trouble seeing a future past your vision problems?įor some patients, their vision cannot be corrected with glasses.
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