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A Quilted Surface is defined as a specialized micro-geometric lens design characterized by a series of subtle: alternating elevations and depressions on the posterior (back) surface of a contact lens. This design is engineered to:
A contact lens that sits too flat against the eye can trap metabolic waste and prevent oxygenated tears from reaching the corneal surface. The quilted channels allow for a constant refresh of the tear film with every blink: which is vital for maintaining corneal health and preventing the tight lens syndrome often seen with older designs.
Yes: the quilted patterns add a level of structural integrity to the lens material. This prevents the lens from flexing or distorting on the eye: which ensures that the optical power remains consistent. This is particularly beneficial for patients with high amounts of astigmatism who require a very stable lens orientation.
The reduced surface contact between the lens and the cornea minimizes mechanical friction. Patients often report a weightless feel and a reduction in the end-of-day dryness that occurs when a lens begins to stick to the eye. The quilted surface helps maintain a thick: lubricating layer of fluid at the lens-cornea interface.
This design is most commonly found in:
No: the quilted depressions are microscopic and cannot be seen with the naked eye. They are etched into the lens material using precision computer-aided manufacturing. Under a high-powered slit-lamp microscope: an eye doctor may be able to see the subtle light reflections of the surface geometry.
Not if you follow a standard cleaning protocol. While the surface has micro-geometry: the depressions are shallow enough that standard no-rub or hydrogen peroxide solutions can easily flush out any debris or protein that might attempt to settle in the quilted channels during the day.