LIRIC: LASER INDUCED REFRACTIVE INDEX CHANGE

Clerio Vision’s LIRIC is a unique, minimally invasive method for correcting  a patient’s visual aberrations with a laser.  This is a potentially seismic shift in how we will be able to correct the eye’s refractive errors in the future. With all current refractive surgery techniques, a laser is used to cut and ablate eye tissue.  But with LIRIC, a femtosecond laser can be used at low energy levels – below the ablation threshold – so no cutting or ablation of tissues occurs.  LIRIC works by changing the refractive index across your visual field to provide patients with their best possible vision.

 

LIRIC can be utilized directly for vision correction procedures, as well as for making optical changes in intraocular lenses or contact lenses.  LIRIC is noninvasive, in that we are using laser pulse energies that are 1/100th to 1/1,000th of those used to create a a corneal flap in a conventional refractive surgery procedure. During LIRIC, the laser alters the refractive index in a highly localized fashion—akin to using a fine-point pen.

The LIRIC technology has the potential to treat myopia, hyperopia, and astigmatism, as well as presbyopia and higher-order aberrations in pseudophakes and nonpseudophakes. For vision correction procedures, LIRIC can be modified or repeated on multiple occasions, enabling patients to have touch-up procedures as their eyes naturally age and change.

LIRIC also has important uses within the field of high-performance contact lenses.  The technology can alter the refractive index within the lens without changing the thickness or surface profiles of that contact lens.  The changes induced by LIRIC are achieved by three-dimensionally scanning a high repetition rate femtosecond laser within the lens, creating a new, internal pattern of optical phase. This enables previously unavailable visual correctors to be made in the middle of thin, comfortable contact lenses.