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Photorefractive Keratectomy

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1. Comparative analysis of safety and efficacy of photorefractive keratectomy versus photorefractive keratectomy combined with crosslinking (Full text)

Comparative analysis of safety and efficacy of photorefractive keratectomy versus photorefractive keratectomy combined with crosslinking To assess the safety, efficacy, and refractive predictability of half-fluence accelerated corneal collagen crosslinking (CXL) applied concurrently with photorefractive keratectomy (PRK), and compare the results to standard PRK.Refractive Services, The Eye Foundation, Coimbatore, India.Interventional comparative case series.Patients seeking refractive (...) correction for myopia or myopic astigmatism were included in the study. Photorefractive keratectomy with concurrent half-fluence crosslinking (PRK Xtra) was performed in eyes with borderline suspicious tomography (not amounting to forme fruste keratoconus) or low pachymetry between 450 and 474 µm with an otherwise unremarkable corneal tomography. Eyes with normal corneal tomography and thickness between 475 and 500 µm underwent standard PRK. The minimum follow-up period was 1 year.In total, 109 eyes

2018 Clinical ophthalmology (Auckland, N.Z.) PubMed

2. Transepithelial photorefractive intrastromal corneal crosslinking versus photorefractive keratectomy in low myopia. (PubMed)

Transepithelial photorefractive intrastromal corneal crosslinking versus photorefractive keratectomy in low myopia. To compare the outcomes of transepithelial photorefractive intrastromal corneal crosslinking (CXL) and photorefractive keratectomy (PRK) in eyes with low myopia.Purpan Hospital, Toulouse, France.Prospective case series.Myopic patients with a manifest refraction spherical equivalent (MRSE) of -1.00 to -2.50 diopters (D) and a cylindrical component of plano to -0.75 D were included (...) . The dominant eye had PRK (PRK eyes). The nondominant eye had transepithelial photorefractive intrastromal CXL with riboflavin (ParaCel Part 1 and 2), 30 mW/cm2 pulsed ultraviolet-A irradiation centered on the pupil (Mosaic System) for 16 minutes and 40 seconds, and a supplemental oxygen delivery mask (CXL eyes). The primary outcome measure was the change in the MRSE. Other outcome measures were the uncorrected (UDVA) and corrected (CDVA) distance visual acuities, mean keratometry, and endothelial cell

2019 Journal of cataract and refractive surgery

3. Epi-Bowman Blunt Keratectomy Versus Diluted EtOH Epithelial Removal in Myopic Photorefractive Keratectomy: A Prospective Contralateral Eye Study. (PubMed)

Epi-Bowman Blunt Keratectomy Versus Diluted EtOH Epithelial Removal in Myopic Photorefractive Keratectomy: A Prospective Contralateral Eye Study. To compare the outcomes and complications of Epi-Bowman blunt keratectomy (EBK) using a blunt epikeratome (Epi-Clear, Orca Surgical, Israel), with alcohol delamination of the corneal epithelium during photorefractive keratectomy (PRK) in contralateral eyes.This prospective, randomized contralateral eye study included 44 eyes of 22 patients undergoing

2019 Cornea

4. Topo-guided LASIK and Photorefractive Keratectomy vs Wavefront LASIK and Photorefractive Keratectomy

Topo-guided LASIK and Photorefractive Keratectomy vs Wavefront LASIK and Photorefractive Keratectomy Topo-guided LASIK and Photorefractive Keratectomy vs Wavefront LASIK and Photorefractive Keratectomy - Full Text View - ClinicalTrials.gov Hide glossary Glossary Study record managers: refer to the if submitting registration or results information. Search for terms x × Study Record Detail Saved Studies Save this study Warning You have reached the maximum number of saved studies (100). Please (...) remove one or more studies before adding more. Topo-guided LASIK and Photorefractive Keratectomy vs Wavefront LASIK and Photorefractive Keratectomy The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. of clinical studies and talk to your health care provider before participating. Read our for details. ClinicalTrials.gov Identifier: NCT03075176 Recruitment

2017 Clinical Trials

5. Outcomes of photorefractive keratectomy in patients with atypical topography (Full text)

Outcomes of photorefractive keratectomy in patients with atypical topography Photorefractive keratectomy (PRK) is at risk of serious complications such as corneal ectasia, which can reduce corrected distance visual acuity. The rate of complications of PRK is higher in patients with atypical topography.To determine the outcomes of photorefractive keratectomy in patients with atypical topography.This cross-sectional study was done in 2015 in Shiraz in Iran. We included 85 eyes in this study (...) and -4.20±1.96 diopters in females; thus there was not statistically significant difference (p = 0.435).PRK is a safe and efficient photorefractive surgery and is associated with low complication rate in patients with atypical topography.

2017 Electronic physician PubMed

6. Intraoperative optical pachymetry in photorefractive keratectomy. (PubMed)

Intraoperative optical pachymetry in photorefractive keratectomy. To study the effect of variables on the accuracy and reliability of the optical pachymeter built into the WaveLight EX500 excimer laser during photorefractive keratectomy (PRK).John A. Moran Eye Center, University of Utah, Salt Lake City, USA.Retrospective case series.A chart review of 352 eyes (181 patients) that had excimer laser PRK was performed. Programmed excimer laser residual stromal bed (RSB) measurements, optical

2019 Journal of cataract and refractive surgery

7. Haze and Visual Acuity Loss After Sequential Photorefractive Keratectomy and Corneal Cross-linking for Keratoconus. (PubMed)

Haze and Visual Acuity Loss After Sequential Photorefractive Keratectomy and Corneal Cross-linking for Keratoconus. To investigate the results after photorefractive keratectomy (PRK) followed immediately by standard 30-minute corneal cross-linking (CXL) for keratoconus.This retrospective study included 26 eyes of 16 patients with keratoconus. Uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), manifest refraction spherical equivalent (SE) and cylinder, apical

2019 Journal of Refractive Surgery

8. Pain management after photorefractive keratectomy. (PubMed)

Pain management after photorefractive keratectomy. To evaluate the effect of a bandage contact lens soaked in ketorolac ophthalmic 0.45% solution (Acuvail) on pain modulation in patients having transepithelial photorefractive keratectomy (PRK).Prospective case series.Narayana Nethralaya Superspeciality Eye Hospital, Bangalore, India.Eyes of patients were divided into 2 groups. After transepithelial PRK, a regular soft bandage contact lens was placed in Group 1 and a ketorolac-soaked bandage

2019 Journal of cataract and refractive surgery

9. Clinical outcomes of mechanical and transepithelial photorefractive keratectomy in low myopia with a large ablation zone. (PubMed)

Clinical outcomes of mechanical and transepithelial photorefractive keratectomy in low myopia with a large ablation zone. To evaluate the clinical outcomes, vector parameters, and aberrations between mechanical photorefractive keratectomy (PRK) and transepithelial PRK in eyes with low myopia.Yonsei University College of Medicine and Eyereum Eye Clinic, Seoul, Korea.Retrospective, comparative case series.Eighty-four eyes of 84 patients with low myopia (≤2.00 diopters) were treated

2019 Journal of cataract and refractive surgery

10. Effect of Corneal Cross-linking on Epithelial Hyperplasia and Myopia Regression After Transepithelial Photorefractive Keratectomy. (PubMed)

Effect of Corneal Cross-linking on Epithelial Hyperplasia and Myopia Regression After Transepithelial Photorefractive Keratectomy. To investigate the effect of accelerated corneal cross-linking (CXL) on epithelial thickness change and refractive outcome after myopic transepithelial photorefractive keratectomy (TPRK).This study compared epithelial thickness changes in 49 patients undergoing TPRK-CXL with 49 patients undergoing TPRK who were matched for age and refractive error. Corneal

2019 Journal of Refractive Surgery

11. Epithelial Photorefractive Keratectomy and Corneal Cross-linking for Keratoconus: The Tel-Aviv Protocol. (PubMed)

Epithelial Photorefractive Keratectomy and Corneal Cross-linking for Keratoconus: The Tel-Aviv Protocol. To present the Tel-Aviv Protocol for patients with progressive keratoconus, which consists of epithelial photorefractive keratectomy (ePRK), and corneal cross-linking (CXL).This was a retrospective case series of 20 consecutive patients diagnosed as having progressive keratoconus at Care-Vision Laser Centers, Tel Aviv, Israel. The Tel-Aviv Protocol included laser epithelial ablation using

2019 Journal of Refractive Surgery

12. Corneal indices following photorefractive keratectomy in children at least 5 years after surgery. (PubMed)

Corneal indices following photorefractive keratectomy in children at least 5 years after surgery. To evaluate long-term corneal outcomes in pediatric patients who underwent photorefractive keratotomy (PRK) for the treatment of refractive amblyopia.In this prospective interventional case series, children with refractive amblyopia underwent PRK between January 1, 2007, and December 31, 2011, at Texas Children's Hospital's Department of Ophthalmology, a single tertiary eye center, and were

2019 JAAPOS - Journal of the American Association for Pediatric Ophthalmology and Strabismus

13. Resolution of epithelial ingrowth after combined photorefractive keratectomy and corneal crosslinking in a patient with post-LASIK ectasia. (PubMed)

Resolution of epithelial ingrowth after combined photorefractive keratectomy and corneal crosslinking in a patient with post-LASIK ectasia. A 34-year-old man was referred to our institute for evaluation of the left eye because of corneal ectasia 10 years after bilateral laser in situ keratomileusis (LASIK). Three months before his referral, the patient had a flap lift for the management of interface fluid accumulation. Topography demonstrated post-LASIK corneal ectasia and slitlamp evaluation (...) revealed epithelial ingrowth in the stromal interface inferiorly. The patient underwent uneventful combined photorefractive keratectomy (PRK) and corneal crosslinking (CXL) to stabilize the corneal ectasia and improve his functional vision. One month after the treatment, slitlamp evaluation revealed complete resolution of stromal interface epithelial ingrowth. At 12 months postoperatively, significant visual and topographic improvement was noted without any evidence of epithelial ingrowth recurrence

2019 Journal of cataract and refractive surgery

14. Bandage contact lens use after photorefractive keratectomy. (PubMed)

Bandage contact lens use after photorefractive keratectomy. The use of a bandage contact lens (BCL) immediately after photorefractive keratectomy (PRK) results in less pain. This review analyzed which BCL is most effective in decreasing pain immediately after PRK and evaluated the reepithelialization process in the treated zone. Two databases, PubMed and Medline, were checked for articles published from January 2005 to May 2018. The keywords were photorefractive keratectomy, PRK, contact lens

2019 Journal of cataract and refractive surgery

15. Combined transepithelial phototherapeutic keratectomy and conventional photorefractive keratectomy followed simultaneously by corneal crosslinking for keratoconus: Cretan protocol plus. (PubMed)

Combined transepithelial phototherapeutic keratectomy and conventional photorefractive keratectomy followed simultaneously by corneal crosslinking for keratoconus: Cretan protocol plus. To evaluate the visual, refractive, and topographic outcomes after combined transepithelial phototherapeutic keratectomy (PTK) and conventional photorefractive keratectomy (PRK) followed simultaneously by corneal crosslinking (CXL) for keratoconus.Vardinoyiannion Eye Institute of Crete, Faculty of Medicine

2017 Journal of cataract and refractive surgery

16. Combination of phototherapeutic keratectomy and wavefront-guided photorefractive keratectomy for the treatment of Thiel–Behnke corneal dystrophy (Full text)

Combination of phototherapeutic keratectomy and wavefront-guided photorefractive keratectomy for the treatment of Thiel–Behnke corneal dystrophy Phototherapeutic keratectomy (PTK) has been used to treat anterior corneal dystrophy but may cause hyperopic shift or corneal high-order aberration. We describe the successful treatment of a case of a 43-year-old female with Thiel-Behnke corneal dystrophy, using PTK followed by wavefront-guided photorefractive keratectomy (PRK). The patient had high

2017 Indian journal of ophthalmology PubMed

17. Photorefractive keratectomy (PRK) versus laser assisted in situ keratomileusis (LASIK) for hyperopia correction. (PubMed)

Photorefractive keratectomy (PRK) versus laser assisted in situ keratomileusis (LASIK) for hyperopia correction. Hyperopia, or hypermetropia (also known as long-sightedness or far-sightedness), is the condition where the unaccommodating eye brings parallel light to a focus behind the retina instead of on it. Hyperopia can be corrected with both non-surgical and surgical methods, among them photorefractive keratectomy (PRK) and laser assisted In situ keratomileusis (LASIK). There is uncertainty

2012 Cochrane

18. Comparison of the Lotrafilcon B and Comfilcon A Silicone Hydrogel Bandage Contact Lens on Postoperative Ocular Discomfort After Photorefractive Keratectomy. (PubMed)

Comparison of the Lotrafilcon B and Comfilcon A Silicone Hydrogel Bandage Contact Lens on Postoperative Ocular Discomfort After Photorefractive Keratectomy. To compare the lotrafilcon B and comfilcon A silicone hydrogel bandage contact lenses after photorefractive keratectomy (PRK).One hundred twenty eyes of 60 patients who underwent PRK were included in this randomized clinical trial study. In the end of the surgery, the lotrafilcon B (Air Optix; Ciba Vision, Duluth, GA) was used in one eye

2018 Eye & contact lens

19. Codeine Plus Acetaminophen for Pain After Photorefractive Keratectomy: A Randomized, Double-Blind, Placebo-Controlled Add-On Trial. (PubMed)

Codeine Plus Acetaminophen for Pain After Photorefractive Keratectomy: A Randomized, Double-Blind, Placebo-Controlled Add-On Trial. Pain after photorefractive keratectomy (PRK) is significant, and the analgesic efficacy and safety of oral opioids in combination with acetaminophen has not been fully investigated in PRK trials.To assess the efficacy and safety of the combination of codeine plus acetaminophen (paracetamol) versus placebo as an add-on therapy for pain control after PRK.Randomized

2018 Cornea

20. Autologous serum eye-drops and enhanced epithelial healing time after photorefractive keratectomy. (Full text)

Autologous serum eye-drops and enhanced epithelial healing time after photorefractive keratectomy. The aim of the study is to test whether use of autologous serum eye-drops can provide earlier epithelial healing following the application of photorefractive keratectomy.Sixty patients (60 eyes) underwent photorefractive keratectomy for myopia. Thirty eyes received autologous serum drops (Study group) while 30 eyes received conventional artificial tears (Control group) after photorefractive (...) keratectomy. An 8 mm epithelial opening was prepared with the application of 18 per cent alcohol for 20 seconds. Photorefractive keratectomy was performed using ESIRIS excimer laser (SCHWIND, Kleinostheim, Germany) with an optic zone of 6.5 mm. Total duration of epithelial healing was monitored as the main outcome measure. The comparisons were done with chi-square test and independent samples t-test. Statistical significance was considered at p < 0.05.Preoperative myopic spherical refraction and ablation

2018 Clinical & Experimental Optometry PubMed

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