Scleral lenses are large rigid-surface contact lenses that are custom designed and computer lathed for each individual patient. These medical devices require proper evaluation and are prescribed by a licensed and skilled eye care practitioner.
When we design the scleral lens, we specify a certain curve to control the depth of the fluid chamber to improve vision and comfort,” says Reekham. the space between the back of the lens and the corneal surface is filled with saline before being placed on the eye. This fluid remains behind the contact lens, providing comfort all day for people with severe dry eyes.
They do a great job of sealing around the eye and not allowing any dust or debris to get underneath them.”
We have many patients who wear scleral only because they have extreme dry eye. Because they act as a ‘liquid bandage,’ they can improve the signs and symptoms of moderate to severe dry eye.
• They are made exactly for your visual needs to give you customized vision correction.
a) Extremely comfortable (one cannot feel the lens in the eyes).
b) Provides good vision and stability.
• Scleral lenses are also used for nonsurgical rehabilitation of severe corneal ectasia ( such as keratoconus, PMCD, TMCD Post Lasik Ectasia etc to improve vision.
• Scleral lenses are beneficial in patients who are cannot bare RGP/Rose K lens in their eyes.
• In patients with damaged corneal tissue, it acts as a remedial shield.
a) They protect the cornea in severe Dry eye syndrome
b) Ease of eye movement in dry eye conditions.
c) They provide extra moisture for healthy eyes and for people who have severe dry eyes.
• They allow the eye to regain a healthier appearance: By giving the eyes a shield from the outside world and a constant hydration source, scleral lenses play a therapeutic role in helping the eye heal or stay healthy. In turn, the eyes retain a healthier appearance
• Scleral lenses are designed to fit in with any degree of corneal steepness or irregularity.
• It corrects full refractive power, which sometimes is not possible with the other lenses.
• Easy to perform activities like running, driving, playing sports, etc. without worrying
about lens droppage.
• They let two to four times more oxygen passes through to your eyes than soft lenses, helping your eyes stay healthy.
• They are durable and scratch-resistant.
• They last for two to three years.
1. Quadant Specific or Toric Scleral Lenses:
These scleral lenses are fitted to the sclera rather than the cornea. These lenses come in different sizes to fit different patients with different needs. These scleral lenses vault over the cornea and align with the sclera in a customized way, creating a space between the lens and the surface of the eye that holds preservative-free saline solution and keeps the eye hydrated and comfortable. This type of lens offers superior comfort for most patients as well as better stability and centration than conventional contact lenses. Quadant specific or Toric scleral lenses are an excellent choice for individuals with keratoconus, dry eyes, complications caused by Lasik eye surgery, or other eye injuries or conditions that make regular contact lenses too difficult to wear.
2. Software-Based Scleral Lenses (Latitude):
The Latitude Scleral lens, a revolutionary software-based lens, conforms precisely to the shape of the sclera where it rests. These lenses are designed to have uniform clearances throughout, including the central, mid-peripheral, and limbal areas – regardless of the extent of the irregularity of the cornea. The unique design of this type of lens gives it a unique contour for an exact fit. Latitude lenses are suitable for most patients, but particularly for those with a larger degree of irregularity, asymmetric keratoconus, or other issues that make fitting more complicated.
3. Impression-Based Scleral Lenses (EyePrintPRO):
Another type of scleral lens that provides an exceptionally accurate fit is the EyePrintPRO. This impression-based scleral contact lens proves an ideal solution for many patients who have trouble with traditional contact lenses and other types of scleral lenses. This method is vastly superior to the practice of finding a good fit among pre-manufactured lenses via trial and error. Creating an impression of the eye takes only a few minutes, and the lenses are much more likely to fit optimally on the first attempt.
1. Corneo-scleral lenses and semi-scleral lenses—these lenses are much larger than traditional gas permeable lenses and rest between the cornea and the sclera.
2. Mini-scleral lenses—these lenses vault over the corneal surface and rest on the anterior sclera.
3. Full-scleral lenses—these lenses are the largest type and provide the most amount of space between the back surface of the lens and cornea.
There are several considerations to make when choosing between smaller- and larger-diameter dry eye scleral lenses. Larger lenses offer more favorable lens bearing distribution, increased peripheral vault, and better protection against damage to the ocular surface. Smaller lenses tend to be easier to get used to and apply. It’s important to discuss all these factors with your eye care provider and work together to find the right fit for your eyes.
Experts stress that contacts are medical devices that sit on your eye and should be tailored to each patient.
“There are tens of thousands of combinations of diameter, curvature, material—and more—that can affect how a lens fits on your eye,” says Meyer. “We need to evaluate your eye’s physiology and visual demands to determine which lens works best for you. Contact lens wearers must take extra care to ensure their eyes stay healthy. That’s why we recommend yearly eye exams by a contact lens specialist for those patients.”
• Keratoconus: an eye condition that results in distorted vision by causing the cornea to thin and expand into a cone shape.
• Corneal irregularities: Scleral lenses provide an even corneal surface and can help with a variety of conditions, including irregularities, post-surgical alterations, a corneal scarring, PMCD (Pellucid Marginal Corneal Degeneration), TMCD (Terence Marginal Corneal Condition) etc.
• Irregular Astigmatism: Scleral lenses can be used to correct eyesight in situations when standard lenses may not be able to effectively address irregular astigmatism.
• Dry Eyes: By maintaining a more stable tear film, the fluid reservoir located between the cornea and the lens’s rear surface can help those with dry eyes e.g. Steven Johnsons Syndrome (SJS)
• Grafts & Transplants: Scleral lenses are able to provide better vision and comfort for people who have received corneal grafts or transplants.
• Chemical injury: In situations when there is significant damage to the cornea due to a chemical injury, conventional contact lenses are unable to provide adequate vision correction or comfort.
• Ocular surface phemphigoid: Ocular Surface Pemphigoid (OSP) is a long-term autoimmune disease that mostly affects the cornea and conjunctiva, among other mucous membranes. This leads to corneal irregularities resulting in vision distortion.
• To avoid introducing bacteria into your eyes and creating infections, it’s critical that you take appropriate care of your lenses. Scleral lenses require the same maintenance as regular lenses.
• Always wash your hands completely before handling contacts or touching your eyes.
• Place the lenses in your palm and add a few drops of multi-purpose solution.
• Gently scrub both sides of the lens with a smooth circular motion.
• Use the multipurpose solution to rinse the lens.
• Place each lens in its appropriate casing and top it out with a new solution.
• Tightly close the case.
• Each time, use a fresh solution, rinse it well, and store it in the lens case.
• Replace the lens case once every 3 month
Ans) Scleral lenses are large-diameter medical devices that are fitted on the white portion of the eye and vault over the cornea. They are called scleral lenses. When treating diseases like dry eye syndrome and keratoconus, they work quite well.
Ans) In order to construct a custom-designed lens, the fitting process for scleral lenses entails collecting precise measurements of your eye.
Ans) Wearers of scleral lenses experience continual hydration because the lens acts as a reservoir of saline fluid. The symptoms of dry eye syndrome are greatly reduced by this hydration.
Ans) Scleral lenses offer longer-lasting relief by addressing the underlying cause of dry eye syndrome, in contrast to traditional therapies.
Ans) Absolutely. Because scleral lenses do not come into contact with the cornea, there is less likelihood of discomfort, and most patients find them to be extremely comfortable.
Ans) Yes, scleral lenses offer superior vision correction in addition to curing dry eye syndrome, particularly for those with uneven corneas.
Ans) Dr. Reekham is a highly skilled optometrist with a focus on vision rehabilitation. He uses scleral lenses to treat keratoconus and dry eye conditions.
Ans) At Reform Vision, you may receive a scleral lens fitting from Dr Reekham Lal, who provides knowledgeable consultation. To make an appointment, please contact us.