Slit lamp, ophthalmic

Intended purpose

The RxSight Light Delivery Device (LDD) is used to improve uncorrected visual acuity by adjusting the Light Adjustable Lens RxLAL) power to correct rreesidual postoperative refractive error including -2.0 to +2.0 diopters of sphere and 0.50 to 3 diopters of cylinder and by changing lens curvature to introduce controlled amounts of spherical berration (+/- 1 micron) and center near add (up to 2 diopters). Following surgical implantation and a period of post-operative stabilization, patients return for examination and refractive adjustment in the office using a profiled beam of light from the Light Delivery Device (LDD).