Five year results of photorefractive keratectomy for myopia

Abstract

Myopic regression occurred as long as 5 years after PRK, with the most important factor for myopic regression being pre-PRK refraction.

Correction of Large Amblyopiogenic Refractive Errors in Children Using the Excimer Laser

“…All surgery was performed at St. Louis Children's Hospital between June 2000 and December 2002. Tables 1 and 2 divide the patients into 3 groups on the basis of the laser surgical technique used: combined phototherapeutic keratectomy (PTK) and PRK (patients [1][2][3][4][5][6][7][8][9][10][11][12], manual removal of epithelium and PRK (patients [13][14][15][16][17][18], or LASEK (patients [19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35]. The mean age at surgery was 8.4 years; range 4-16 years.…”

“…Excimer laser correction of refractive errors has been shown to be effective and safe in adults, [4][5][6][7] but the use of this method in children has been the subject of a limited number of case series. [8][9][10][11] In adults, the excimer laser technique most widely used (laser-assisted in situ keratomileusis, or LASIK) entails the creation of a corneal stromal flap using a mechanical blade or blade-equivalent laser methodology.…”

Long-term results of photorefractive keratectomy for myopia and myopic astigmatism

“…Uncorrected visual acuity of 20/40 or better was reported in 55% to 93% of the eyes (1)(2) and 88.5% in another study (3) . Visual acuity of 20/25 or better was achieved in 62.4% of myopic eyes up to -6.50 D (4) . Our experience with the Summit Apex Plus excimer laser in the correction of compound myopic astigmatism compares favorably with these results.…”

“…Several well-designed studies report the results of PRK (1)(2)(3)(4)(5)(6) but few describe long-term outcomes (5)(6) , which is of particular importance to assess refractive stability, efficacy and potential late-phase complications. For best results, it is necessary to understand each aspect of postoperative changes.…”

Prospective Evaluation of Mesopic Night Vision and Night Vision Goggle Visual Acuity After Photorefractive Keratectomy (PRK)

“…Questions arise as to how significant these so-called minor disturbances might be in military operational night environments. An early study (11) of low to moderate myopes (USAF pilots fall in this refractive range) at 3 years post-PRK continued to report what was described as mildly decreased night vision, which was significant enough to cause asthenopia or eyestrain. Although some of these studies were conducted early on when smaller ablation zones were being used, one civilian author (12) stated in 2002 that with the increasing number of patients having RS, the increase in night vision problems, or reduced mesopic function, may become "a major public health issue".…”