scholarly journals Long-Term Followup of Laser In Situ Keratomileusis for Hyperopia Using a 213 nm Wavelength Solid-State Laser

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Carmina Franz G. Quito ◽  
Archimedes Lee D. Agahan ◽  
Raymond P. Evangelista
Keyword(s):  
Visual Acuity ◽  
Solid State ◽  
Case Series ◽  
Solid State Laser ◽  
Laser In Situ Keratomileusis ◽  
Distance Visual Acuity ◽  
State Laser

Purpose. To evaluate the long-term efficacy, accuracy, stability, and safety of hyperopic laser in situ keratomileusis (LASIK) using a 213 nm wavelength solid-state laser. Methods. This prospective noncomparative case series consisted of 34 eyes of 17 patients which underwent hyperopic LASIK using a 213 nm solid-state laser (Pulzar Z1, CustomVis) at an outpatient refractive surgery center in Manila, Philippines. The preoperative and postoperative examinations included uncorrected distance visual acuity (UDVA), subjective manifest refraction, corrected distance visual acuity (CDVA), cycloplegic refraction, slitlamp biomicroscopy, and keratometry (). Main Outcome Measures. Accuracy, efficacy, stability, and safety of the refractive procedure. Results. Mean follow-up was months. At the end of follow-up, 26.47% had a UDVA of 20/20 and 94.12% had a UDVA of ≥20/40. Manifest refractive spherical equivalent (MRSE) was within ±0.50 D of the target refraction in 55.88% and within ±1.0 D in 85.30% of the study eyes. Refractive stability was noted in the 1st postoperative month while hyperopic regression was noted after the 3rd postoperative year. No eye lost more than 2 lines of CDVA. Conclusion. Our results show that the 213 nm solid state laser system is safe, effective, accurate, and predictable for the treatment of hyperopia.

scholarly journals Photorefractive Keratectomy with Adjunctive Mitomycin C for Residual Error after Laser-Assisted In Situ Keratomileusis Using the Pulzar 213 nm Solid-State Laser: Early Results

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Maya Fe Ng-Darjuan ◽  
Raymond P. Evangelista ◽  
Archimedes Lee D. Agahan
Keyword(s):  
Solid State ◽  
Mitomycin C ◽  
Case Series ◽  
Solid State Laser ◽  
Residual Error ◽  
Photorefractive Keratectomy ◽  
Safe Procedure ◽  
State Laser ◽  
Early Results

Purpose. To evaluate the accuracy, efficacy, stability, and safety of photorefractive keratectomy (PRK) enhancement using the Pulzar 213 nm solid-state laser (SSL) with adjunctive Mitomycin C in eyes previously treated with laser assisted in situ keratomileusis (LASIK) with residual error of refraction. Methods. This is a prospective noncomparative case series of 16 eyes of 12 patients who underwent PRK for residual refractive error after primary LASIK. Mitomycin C 0.02% was used after the PRK to prevent haze formation. Outcomes measured were pre- and postoperative manifest refraction spherical equivalent (MRSE), uncorrected (UDVA) and best-corrected distance visual acuity (CDVA), and slit lamp evidence of corneal complications. Results. The mean UDVA improved from 20/70 preoperatively to 20/30 postoperatively. The average gain in lines for the UDVA was 2.38. After six months of followup, the postoperative MRSE within 0.50 D in 56% (9) of eyes and 94% (15) eyes were within 1.0 diopters of the intended correction. No eyes developed haze all throughout the study. Conclusion. PRK enhancement with adjunctive use of Mitomycin C for the correction of residual error of refraction after LASIK using the Pulzar 213 nm solid-state laser is an accurate, effective, and safe procedure.

One-year results of photorefractive keratectomy and laser in situ keratomileusis for myopia using a 213 nm wavelength solid-state laser

2007 ◽  
Vol 33 (6) ◽  
pp. 971-977 ◽  
Author(s):  
Nikolaos S. Tsiklis ◽  
George D. Kymionis ◽  
George A. Kounis ◽  
Aristofanis I. Pallikaris ◽  
Vasilios F. Diakonis ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Laser ◽  
Laser In Situ Keratomileusis ◽  
Photorefractive Keratectomy ◽  
State Laser ◽  
One Year

scholarly journals Effect of Transepithelial Photorefractive Keratectomy without Mitomycin C in the Treatment of Femtosecond Laser In Situ Keratomileusis Corneal Flap Complications

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Jing Wang ◽  
Weiqian Cao ◽  
Liming Tao
Keyword(s):  
Visual Acuity ◽  
Femtosecond Laser ◽  
Mitomycin C ◽  
Laser In Situ Keratomileusis ◽  
Photorefractive Keratectomy ◽  
Distance Visual Acuity ◽  
Uncorrected Distance Visual Acuity ◽  
Haze Formation

Purpose. To assess the efficacy and safety of transepithelial photorefractive keratectomy (TPRK) without mitomycin C as treatment for femtosecond laser in situ keratomileusis (FS-LASIK) corneal flap complications. Methods. Eight patients with corneal flap complications that occurred after FS-LASIK (five with eccentric flaps, two with buttonhole flaps, and one with a thick flap) were included in the study. Patients were treated with TPRK without mitomycin C between two weeks and twelve months after surgery. The postoperative manifest refraction, uncorrected distance visual acuity, and haze formation were assessed during six months of follow-up. Results. The mean manifest refractive spherical and cylinder refraction was 0.16 ± 0.26 and −0.44 ± 0.33 diopters, respectively, at six months postoperatively. The uncorrected distance visual acuity was above 20/25 in all patients after six months of follow-up. No haze formation was detected. Conclusions. TPRK without mitomycin C appears to be a safe and effective treatment for FS-LASIK corneal flap complications.

scholarly journals Three-year outcomes of small incision lenticule extraction (SMILE) and femtosecond laser-assisted laser in situ keratomileusis (FS-LASIK) for myopia and myopic astigmatism

2018 ◽  
Vol 103 (4) ◽  
pp. 565-568 ◽  
Author(s):  
Tian Han ◽  
Ye Xu ◽  
Xiao Han ◽  
Li Zeng ◽  
Jianmin Shang ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Femtosecond Laser ◽  
Laser In Situ Keratomileusis ◽  
Small Incision Lenticule Extraction ◽  
Small Incision ◽  
Lenticule Extraction ◽  
Myopic Astigmatism

AimsTo compare long-term clinical outcomes following small incision lenticule extraction (SMILE) and femtosecond laser-assisted laser in situ keratomileusis (FS-LASIK) for myopia and myopic astigmatism correction.MethodsIn this retrospective study, we enrolled a total of 101 patients (101 eyes) who underwent SMILE or FS-LASIK 3 years prior. Measured parameters included uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), manifest refraction and corneal wavefront aberrations.ResultsNo significant differences in patient characteristics were found between the two groups. At the 3-year follow-up, UDVA was better than or equal to 20/20 in 90% and 85% (p=0.540) of the eyes; the efficacy indexes were 1.05±0.19 and 1.01±0.21 in the SMILE and FS-LASIK groups, respectively (p=0.352). Safety indexes were 1.19±0.17 and 1.15±0.20 in the SMILE and FS-LASIK groups, respectively (p=0.307). Eighty per cent and 65% of eyes were within ±0.50 D of the attempted spherical equivalent correction after SMILE and FS-LASIK, respectively (p=0.164). Vector analysis revealed no significant differences in astigmatic correction between the two groups (p>0.05). Surgically induced spherical aberration was higher in the FS-LASIK group than in the SMILE group (p<0.001).ConclusionLong-term follow-up analysis suggested that both SMILE and FS-LASIK were safe and equally effective for myopic and astigmatic correction.

Results of laser in situ keratomileusis performed using solid-state laser technology

2012 ◽  
Vol 38 (3) ◽  
pp. 437-444 ◽  
Author(s):  
David P. Piñero ◽  
Rafael J. Pérez-Cambrodí ◽  
Aránzazu Gómez-Hurtado ◽  
Francisco J. Blanes-Mompó ◽  
Antonio Alzamora-Rodríguez
Keyword(s):  
Solid State ◽  
Solid State Laser ◽  
Laser In Situ Keratomileusis ◽  
Laser Technology ◽  
State Laser

Hybrid Feed-Forward and Feedback Long-term CEP Stabilization of All-Solid-State Laser

2020 ◽  
Author(s):  
Jack Hirschman ◽  
Randy Lemons ◽  
Evan Chansky ◽  
Günter Steinmeyer ◽  
Sergio Carbajo
Keyword(s):  
Solid State ◽  
Solid State Laser ◽  
Feed Forward ◽  
State Laser

Bioptics for high hyperopia with combined multifocal intraocular lens implantation and excimer ablation in young patients

2018 ◽  
Vol 29 (4) ◽  
pp. 426-430 ◽  
Author(s):  
Omer Trivizki ◽  
David Smadja ◽  
Michael Mimouni ◽  
Samuel Levinger ◽  
Eliya Levinger
Keyword(s):  
Visual Acuity ◽  
Intraocular Lens ◽  
Laser In Situ Keratomileusis ◽  
Intraocular Lens Implantation ◽  
Multifocal Intraocular Lens ◽  
Distance Visual Acuity ◽  
Lens Implantation ◽  
Near Visual Acuity ◽  
High Hyperopia

Purpose:To analyze the visual and refractive outcome of the bioptics procedure combining multifocal intraocular lens implantation and excimer laser surgery in young patients with high hyperopic eyes not suitable for a single surgical procedure.Methods:This retrospective case series included 10 eyes of five patients (age range 18–30 years) with high hyperopia (spherical equivalent +8.51 ± 0.85 diopters (D)). They had been treated with serial multifocal intraocular lens implantation followed 6 weeks later by laser in situ keratomileusis for residual hyperopia. Uncorrected distance visual acuity, uncorrected near visual acuity, corrected distance visual acuity, corrected near visual acuity, and manifest refraction were evaluated before surgeries, after multifocal intraocular lens implantation, and 3 months post laser in situ keratomileusis.Results:No patients were lost to follow-up (6 months). The mean spherical equivalent decreased to +2.05 ± 1.33 D after multifocal intraocular lens implantation and to −0.10 ± 0.58 D after the laser in situ keratomileusis procedure. Success of the procedures was determined by uncorrected visual acuity. LogMAR uncorrected distance visual acuity improved by a total of more than six lines from 1.05 ± 0.18 LogMAR to 0.46 ± 0.12 LogMAR post multifocal intraocular lens implantation and to 0.15 ± 0.06 LogMAR after both surgeries. The LogMAR uncorrected near visual acuity increased by 0.81 ± 0.82 LogMAR after lens implantation due to loss of accommodation, and all eyes reached a LogMAR of 0 at 1 month postoperatively following laser in situ keratomileusis.Conclusions:A bioptics approach involving multifocal intraocular lens followed 6 weeks later by a laser in situ keratomileusis procedure for the correction of very high hyperopia enabled the resolution of the residual refractive error in young very high hyperopic patients.

scholarly journals Clinical Outcomes of LASIK Using a 213 nm Solid-State Laser System: 6-month Follow-up

2009 ◽  
Vol 50 (6) ◽  
pp. 826
Author(s):  
Tae Hyung Lim ◽  
Chul Young Choi ◽  
Myoung Joon Kim ◽  
Jae-Yong Kim ◽  
Hungwon Tchah
Keyword(s):  
Solid State ◽  
Clinical Outcomes ◽  
Laser System ◽  
Solid State Laser ◽  
State Laser

scholarly journals Twelve-Year Follow-Up of Laser In Situ Keratomileusis for Moderate to High Myopia

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Tetsuya Ikeda ◽  
Kimiya Shimizu ◽  
Akihito Igarashi ◽  
Sumie Kasahara ◽  
Kazutaka Kamiya
Keyword(s):  
High Myopia ◽  
Central Corneal Thickness ◽  
Pearson Correlation ◽  
Corneal Thickness ◽  
Laser In Situ Keratomileusis ◽  
Manifest Refraction ◽  
Observation Period

Purpose. To assess the long-term clinical outcomes of conventional laser in situ keratomileusis (LASIK) for moderate to high myopia.Methods. We retrospectively examined sixty-eight eyes of 37 consecutive patients who underwent conventional LASIK for the correction of myopia (−3.00 to −12.75 diopters (D)). At 3 months and 1, 4, 8, and 12 years postoperatively, we assessed the safety, efficacy, predictability, stability, mean keratometry, central corneal thickness, and adverse events.Results. The safety and efficacy indices were0.82±0.29and0.67±0.37, respectively, 12 years postoperatively. At 12 years, 53% and 75% of the eyes were within 0.5 and 1.0 D, respectively, of the targeted correction. Manifest refraction changes of −0.74±0.99 D occurred from 3 months to 12 years after LASIK (p<0.001). We found a significant correlation of refractive regression with the changes in keratometric readings from 3 months to 12 years postoperatively (Pearson correlation coefficient,r=-0.28,p=0.02), but not with the changes in central corneal thickness (r=-0.08,p=0.63). No vision-threatening complications occurred in any case.Conclusions. Conventional LASIK offered good safety outcomes during the 12-year observation period. However, the efficacy and the predictability gradually decreased with time owing to myopic regression in relation to corneal steepening.

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