Excimer Laser Photorefractive Keratectomy for the Correction of Hyperopia Using an Erodible Mask and Axicon System

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

“…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.…”

Long-Term Efficacy of Photorefractive Keratectomy In Hyperopia Patients

“…Mean SE value at the 12 th month was +0.55 D, which was measured as +0.83 D after 7.5 years of follow-up. Regression was not reported in any of the patients [11]. El-Agha et al, did a study on 22 PRK received hyperopic eyes (≤+6.00 D) and found overcorrection at the first month and a fast refractive regression and myopic neutralization 6 months after surgery.…”

“…The efficacy and reliability of PRK therapy in hypermetropic patients up to +5.00 D were documented in several studies [10][11][12][13][14][15][16][17]. It has been reported that in high hyperopia (˃5.00 D), PRK is a method that has less predictable results associated with higher regressions [18].…”

Sixteen-year follow-up of hyperopic laser in situ keratomileusis

“…However, over the past quarter of a century, the introduction and refinement of excimer laser (7)(8)(9)(10)(11) , refractive lens exchange, multifocal (12) and phakic intraocular lens technologies (13) have heralded a new era in refractive surgery and offer promise for the correction of hyperopia. Published studies of hyperopic laser photorefractive keratectomy (H-PRK) and hyperopic laser in situ keratomileusis (H-LASIK) have demonstrated both efficacy and safety and such procedures are now in wide-spread clinical usage (7)(8)(9)(10)(11) . However, compared to myopic excimer laser kerato-refractive procedures, results for hyperopic treatments are inferior (14) .…”

“…However, compared to myopic excimer laser kerato-refractive procedures, results for hyperopic treatments are inferior (14) . Clinical studies of H-PRK and H-LASIK report acceptable efficacy for corrections up to approximately +4.0 diopters (D) but with diminished predictability, refractive stability and safety for higher order corrections (7)(8)(9)(10)(11)(15)(16) .…”