Laser Correction of Hyperopia and Presbyopia

Excimer laser photorefractive keratectomy for hyperopia: 7.5-year follow-up

“…These results are similar to those in other published studies of H-PRK and H-LASIK, which demonstrate reasonable predictability for low to moderate hyperopic corrections but less satisfactory results for higher-order errors. [14][15][16][17][18][19][20] Clinical studies of PRK and LASIK for myopia demonstrate similar tendencies, with predictability varying inversely with the degree of attempted correction. [7][8][9][10][11][12][13] However, compared to myopic corrections, predictability for comparable hyperopic refractive errors is poorer.…”

“…Studies of hyperopic PRK (H-PRK) and hyperopic LASIK (H-LASIK) have demonstrated acceptable efficacy for corrections up to C4.00 diopters (D), but with limited predictability for higher-order corrections. [15][16][17][18][19][20] For any surgical procedure, it is essential to constantly monitor long-term stability and efficacy. To date, the longest prospective follow-up studies for excimer laser refractive surgery are mainly confined to myopic PRK and are limited to 6 years.…”

Four corneal presbyopia corrections: Simulations of optical consequences on retinal image quality

“…1 Several methods to restore accommodation with scleral expansion near the ciliary body were designed; however, none is proven effective. [2][3][4] In refractive laser surgery, the first ''presbyopia corrections'' date to the early 1990s 5,6 and have not gained clinical acceptance. More sophisticated presbyopia correction profiles have been proposed (mostly as patents) including an induced central steep island (CSI), 7,8 decentered steep area, 9,10 and a near vision zone in the midperiphery of the cornea 11,12 (Figure 1).…”

Photopic pupillometry–guided laser in situ keratomileusis for hyperopic presbyopia

“…9,10 Hyperopic monovision necessitates more precise outcomes because presbyopic patients will be affected if either eye deviates from the target refraction. Ensuring happy monovision patients postoperatively requires preoperative patient education, surgical planning, and postoperative support.…”