Ten-year follow-up of photorefractive keratectomy for myopia

Abstract

PRK is safe and effective in refraction even 10 years after surgery; however, further long-term follow-up is needed to evaluate the decreasing of endothelial cells.

Photorefractive Keratectomy for Residual Myopia after Myopic Laser In Situ Keratomileusis

“…On the other hand, Güell et al [ 10 ] corrected regression after LASIK using intraepithelial PRK in which Bowman's membrane is left intact and there is no stromal healing, but only 52.4% of their cases were within ±0.50 D of emmetropia after 6 months compared to 90.6% in this study. The efficacy index in this study was 0.86 at 1 year which is better than that reported by Koshimizu et al [ 32 ] (0.74) and by Alio et al [ 15 ] (0.81) and this is most probably because they reported their efficacy index at a longer follow-up period (10 years) after PRK. The safety index in this study was 1.01 at 12 months, indicating safety of PRK for residual myopia following LASIK.…”

Photorefractive Keratectomy for Residual Myopia after Myopic Laser In Situ Keratomileusis

“…On the other hand, Güell et al [ 10 ] corrected regression after LASIK using intraepithelial PRK in which Bowman's membrane is left intact and there is no stromal healing, but only 52.4% of their cases were within ±0.50 D of emmetropia after 6 months compared to 90.6% in this study. The efficacy index in this study was 0.86 at 1 year which is better than that reported by Koshimizu et al [ 32 ] (0.74) and by Alio et al [ 15 ] (0.81) and this is most probably because they reported their efficacy index at a longer follow-up period (10 years) after PRK. The safety index in this study was 1.01 at 12 months, indicating safety of PRK for residual myopia following LASIK.…”

Excimer laser photorefractive keratectomy for low to moderate myopia using a 5.0 mm treatment zone and no transitional zone: 16-year follow-up

“…Our visual acuity and safety results are similar to those in these studies, with only 1 late-phase complication in a patient who developed a retinal detachment that was probably unrelated to the PRK. This is similar to the levels of safety reported after 10 years by Koshimizu et al 10 Our study evaluated 39 eyes of the 58 eyes that O'Conner et al 3 examined 4 years previously. We had similar outcomes, with a mean refractive error of À0.58 D and À0.54 D in the 16-year group and 12-year group, respectively; 79.5% of eyes in the 16-year group and 81% in the 12-year group were within G1.00 D of emmetropia.…”

Long-Term Visual and Refractive Stability and Ocular Biometric Changes after Laser-Assisted Subepithelial Keratomileusis for Correction of Myopia

“… 3 Other studies of myopic refractive surgeries with PRK have also shown mild regression of <0.5 D at 10–16 years. 4 5 6 10 The refractive regression, efficacy, and safety of our patients were 0.1 D, 0.98, and 1.02 at 8 years, postoperatively. We did not observe any correlation between refractive regression, CCT and keratometry values.…”

Photorefractive Keratectomy for Residual Myopia after Myopic Laser In Situ Keratomileusis

“…On the other hand, Güell et al [ 10 ] corrected regression after LASIK using intraepithelial PRK in which Bowman's membrane is left intact and there is no stromal healing, but only 52.4% of their cases were within ±0.50 D of emmetropia after 6 months compared to 90.6% in this study. The efficacy index in this study was 0.86 at 1 year which is better than that reported by Koshimizu et al [ 32 ] (0.74) and by Alio et al [ 15 ] (0.81) and this is most probably because they reported their efficacy index at a longer follow-up period (10 years) after PRK. The safety index in this study was 1.01 at 12 months, indicating safety of PRK for residual myopia following LASIK.…”

Excimer laser photorefractive keratectomy for low to moderate myopia using a 5.0 mm treatment zone and no transitional zone: 16-year follow-up

“…Our visual acuity and safety results are similar to those in these studies, with only 1 late-phase complication in a patient who developed a retinal detachment that was probably unrelated to the PRK. This is similar to the levels of safety reported after 10 years by Koshimizu et al 10 Our study evaluated 39 eyes of the 58 eyes that O'Conner et al 3 examined 4 years previously. We had similar outcomes, with a mean refractive error of À0.58 D and À0.54 D in the 16-year group and 12-year group, respectively; 79.5% of eyes in the 16-year group and 81% in the 12-year group were within G1.00 D of emmetropia.…”

Long-Term Visual and Refractive Stability and Ocular Biometric Changes after Laser-Assisted Subepithelial Keratomileusis for Correction of Myopia

“… 3 Other studies of myopic refractive surgeries with PRK have also shown mild regression of <0.5 D at 10–16 years. 4 5 6 10 The refractive regression, efficacy, and safety of our patients were 0.1 D, 0.98, and 1.02 at 8 years, postoperatively. We did not observe any correlation between refractive regression, CCT and keratometry values.…”

Photorefractive Keratectomy for Residual Myopia after Myopic Laser In Situ Keratomileusis

“…On the other hand, Güell et al [ 10 ] corrected regression after LASIK using intraepithelial PRK in which Bowman's membrane is left intact and there is no stromal healing, but only 52.4% of their cases were within ±0.50 D of emmetropia after 6 months compared to 90.6% in this study. The efficacy index in this study was 0.86 at 1 year which is better than that reported by Koshimizu et al [ 32 ] (0.74) and by Alio et al [ 15 ] (0.81) and this is most probably because they reported their efficacy index at a longer follow-up period (10 years) after PRK. The safety index in this study was 1.01 at 12 months, indicating safety of PRK for residual myopia following LASIK.…”

Excimer laser photorefractive keratectomy for low to moderate myopia using a 5.0 mm treatment zone and no transitional zone: 16-year follow-up

“…Our visual acuity and safety results are similar to those in these studies, with only 1 late-phase complication in a patient who developed a retinal detachment that was probably unrelated to the PRK. This is similar to the levels of safety reported after 10 years by Koshimizu et al 10 Our study evaluated 39 eyes of the 58 eyes that O'Conner et al 3 examined 4 years previously. We had similar outcomes, with a mean refractive error of À0.58 D and À0.54 D in the 16-year group and 12-year group, respectively; 79.5% of eyes in the 16-year group and 81% in the 12-year group were within G1.00 D of emmetropia.…”

Long-Term Visual and Refractive Stability and Ocular Biometric Changes after Laser-Assisted Subepithelial Keratomileusis for Correction of Myopia

“… 3 Other studies of myopic refractive surgeries with PRK have also shown mild regression of <0.5 D at 10–16 years. 4 5 6 10 The refractive regression, efficacy, and safety of our patients were 0.1 D, 0.98, and 1.02 at 8 years, postoperatively. We did not observe any correlation between refractive regression, CCT and keratometry values.…”