July 08, 2013
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Novel cross-linking technique for thin corneas utilizes contact lenses

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CHENNAI, India — A new technique called contact lens-assisted cross-linking, or CACXL, for cross-linking in thin corneas has had good early results, according to the surgeon who created the technique.

Soosan Jacob, MS, FRCS, DNB, presented early results with the CACXL technique here at the Indian Intraocular Implant and Refractive Surgery meeting.

In the procedure, a Bausch + Lomb SofLens is soaked in riboflavin 0.1% solution for 30 minutes while riboflavin is applied to the cornea for 30 minutes along with ultraviolet radiation. Jacob noted that the type of lens used should be thin and must not be UV-protective or it will negate the effect. Ultraviolet A is applied to the eye with a 370 nm wavelength.

"We applied Lambert’s law in this process — that is, each unit layer of a solution absorbs an equal fraction of light passing through it," she said.

Anatomic and visual results are encouraging in early cases thus far, Jacob reported.

"Contact lens CXL is a new technique for cross-linking in corneas less than 400 µm thick," she said.

Disclosure: Jacob has no relevant financial disclosures.