Scleral lenses are large diameter lenses generally above 15mm designed to rest softly over the conjunctiva. As an eye care provider to the LA Dodgers franchise, I understand the importance of these lenses and getting it right the first time. These lenses are fitted to not touch the cornea and there is a space filled with isotonic fluid between the cornea and the lens. Generally, scleral contact lenses in Phoenix are used for high irregular astigmatism as seen in various corneal ectatic diseases such as keratoconus, pellucid marginal degeneration, or/and as a liquid bandage in ocular surface disorders such as Stevens-Johnson syndrome, dry eyes, graft-vs-host disease, and ocular cicatricial pemphigoid.
Technological advances have occurred in many fields related to scleral lenses in Phoenix which include contact lens materials, designs, and manufacturing techniques. Current scleral lenses are manufactured with high oxygen permeable materials that allow a significant amount of oxygen as compared to older materials like PMMA.
*Anterior Segment showing a Scleral Lens and a Cornea properly aligned.
*Anterior Segment OCT showing the separation between the lens and
cornea as well as the size of the fluid reservoir in microns.
With the advent of computerized lathe cut machines, it is also possible to make lenses with sub-micron precision. With the availability of newer technology, such as anterior segment optical coherence tomography (ASOCT), it is also possible to measure the amount of corneal clearance much more accurately which allows more precision in determining the size of the fluid reservoir. By increasing the sagittal height and thereby vault over the cornea, one can use these lenses over a prolonged period without compromising vision and significantly increased comfort. Today scleral lenses are made to have a very smooth surface, smoother edges, and very low errors in making. Patients often wear them comfortably all day and find the visual outcomes to be better than they expected.
If you have any questions regarding scleral lenses, please reach out today so we can help educate you as well as look into your options!