Early Outcomes of INTRACOR Femtosecond Laser Treatment for Presbyopia

Abstract

The INTRACOR procedure for presbyopia showed good visual acuity outcomes in the early postoperative period. The short treatment time in combination with maintained corneal integrity suggests this new technique has good potential for the treatment of presbyopia.

Cornea-Based Techniques and Technology for Surgical Correction of Presbyopia

“…Holzer et al recently reported the longest follow-up results from use of this technique [35,36]. After 18 months, median UCNVA had improved significantly from 0.7 log -MAR preoperatively to 0.2 log MAR (P \ 0.001) and the median corneal true net power increased significantly by 1.1-0.9 D (P \ 0.001).…”

“…Five concentric rings are cut within the area 2.0 and 4.0 mm from the line of sight. This should be marked before surgery by using the first Purkinje image [35].…”

Pediatric refractive surgery: Corneal and intraocular techniques and beyond

“…This laser, most commonly used to create LASIK flaps, can be used to cut corneal and intraocular tissues precisely. Proposed corneal procedures include the creation of intrastromal annular incisions to treat presbyopia, 65 laser-assisted astigmatic keratotomy incisions for the treatment of astigmatism, 66 penetrating cornea incisions for use in refractive lens surgery, 67 and the creation of intrastromal pockets for the placement of corneal inlays. 68 Lens-based femtosecond procedures include the creation of an anterior or posterior capsulotomy and disassembling the lens nucleus for easy removal by aspiration.…”

Corneal intrastromal tissue modeling with the femtosecond laser

“…Recent studies showed that three-layer intrastromal photodisruption by the fs laser in the midperiphery of the stroma can flatten the cornea, possibly because of tissue relaxation [15]. Another study has shown that isolated intrastromal keratotomy using the fs laser technique will be clinically useful for correction of presbyopia (INTRACOR™) [18]. Nevertheless, the mechanisms for remodeling corneal curvature and thickness by intrastromal tissue modeling remain poorly understood.…”