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Photorefractive Keratectomy

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1021. A new method of calculating intraocular lens power after photorefractive keratectomy. (Abstract)

A new method of calculating intraocular lens power after photorefractive keratectomy. To find a method of calculating intraocular lens (IOL) power that may be independent of preoperative data, in eyes that have developed a cataract after refractive surgery.Prior to and 1 month after PRK, the SRK/T formula was used to calculate IOL power in 88 eyes of 65 patients with a preoperative spherical equivalent refraction between -16.25 to +0.25 D (mean -5.39 +/- 3.19 D). IOL power was calculated

2002 Journal of Refractive Surgery

1022. Late corneal scarring after photorefractive keratectomy concurrent with development of systemic lupus erythematosus. (Abstract)

Late corneal scarring after photorefractive keratectomy concurrent with development of systemic lupus erythematosus. To report a case of late-onset corneal haze following previous photorefractive keratectomy (PRK) concurrent with the development of systemic lupus erythematosus.Single case report and review of medical literature.A 41-year-old woman underwent uneventful bilateral, non-simultaneous photorefractive keratectomy (PRK) with retreatment of the right eye after 1 year. Two months after

2002 Journal of Refractive Surgery

1023. Effect of hyperopic photorefractive keratectomy on corneal sensitivity: a longitudinal study. (Abstract)

Effect of hyperopic photorefractive keratectomy on corneal sensitivity: a longitudinal study. To investigate corneal sensitivity after photorefractive keratectomy (PRK) for low hyperopia, as measured with a non-invasive stimulus.Two experimental groups were recruited: a control group of 17 patients (mean age 61.65 years) who underwent no treatment, and a PRK group of 11 patients (mean age 58.64 years) who underwent one of three attempted hyperopic corrections: +2.00 D (two patients), +3.00 D

2003 Journal of Refractive Surgery

1024. Photorefractive keratectomy with and without smoothing: a bilateral study. (Abstract)

Photorefractive keratectomy with and without smoothing: a bilateral study. To assess whether a smoother stromal surface and a faster epithelium regeneration after excimer laser photorefractive keratectomy (PRK) may lead to better visual results.Ten patients had unilateral PRK and contralateral PRK plus smoothing. The operative outcome was checked by means of digital standardized photographs taken at 0, 20, 40, and 60 hours after surgery. Complete clinical examinations were performed before

2003 Journal of Refractive Surgery

1025. Complications of photorefractive keratectomy and laser in situ keratomileusis. (Abstract)

Complications of photorefractive keratectomy and laser in situ keratomileusis. To analyze the safety of photorefractive keratectomy (PRK) and laser in situ keratomileusis (LASIK) with the Nidek EC-5000 excimer laser for surgery performed from Jan 1999 to Dec 2001.Retrospective study of excimer laser in 683 eyes: PRK was performed in 103 eyes and LASIK was performed in 580 eyes using the Nidek EC-5000 excimer laser and Moria Carriazo Barraquer microkeratome. We classified complications

2003 Journal of Refractive Surgery

1026. Endothelial cell studies in patients after photorefractive keratectomy for hyperopia. (Abstract)

Endothelial cell studies in patients after photorefractive keratectomy for hyperopia. To report central and peripheral corneal endothelial cell studies performed as part of the VISX hyperopic photorefractive keratectomy (PRK) clinical trial.During this prospective, multicenter clinical trial, which was part of an FDA investigation, endothelial cell specular microscopy was done at five centers. Non-contact central and peripheral cell density, percent hexagonality, and coefficient of variability

2003 Journal of Refractive Surgery

1027. Changes in central corneal thickness after laser in situ keratomileusis and photorefractive keratectomy. (Abstract)

Changes in central corneal thickness after laser in situ keratomileusis and photorefractive keratectomy. To evaluate changes in corneal thickness after laser in situ keratomileusis (LASIK) and photorefractive keratectomy (PRK) in eyes with the same preoperative refraction, correlate these changes to postoperative refractive outcomes, and compare corneal healing process in a standardized subset of patients.Central corneal thickness was measured by contact ultrasound pachymetry in 14 eyes of 8

2003 Journal of Refractive Surgery

1028. Ascorbate prophylaxis for corneal haze after photorefractive keratectomy. (Abstract)

Ascorbate prophylaxis for corneal haze after photorefractive keratectomy. To evaluate whether prophylactic systemic ascorbic acid influences the average level of haze and the incidence of late onset corneal haze after photorefractive keratectomy (PRK).Two consecutive groups of eyes treated with PRK for myopia with or without astigmatism were retrospectively compared. The patients had been treated similarly, with the exception that systemic ascorbate had been supplied orally in one of the groups

2003 Journal of Refractive Surgery

1029. Fungal keratitis after photorefractive keratectomy: delayed diagnosis and treatment in a co-managed setting. (Abstract)

Fungal keratitis after photorefractive keratectomy: delayed diagnosis and treatment in a co-managed setting. To report a case of fungal keratitis following photorefractive keratectomy (PRK) in a co-managed setting.A 35-year-old man with a preoperative refraction of -13.00 +3.75 x 18 degrees OD, and -12.50 +2.50 x 70 degrees OS underwent bilateral simultaneous PRK. On postoperative day 16, the patient presented with complaints of decreased vision and foreign body sensation. Examination by the co

2003 Journal of Refractive Surgery

1030. Wavefront-supported photorefractive keratectomy: 12-month follow-up. (Abstract)

Wavefront-supported photorefractive keratectomy: 12-month follow-up. To evaluate safety, efficacy, predictability, and stability of wavefront-supported photorefractive keratectomy (PRK) for correction of myopia and myopic astigmatism, with 12-month follow-up.Thirty eyes of 23 patients with myopia less than -8.00 D (mean -3.76 +/- 1.90 D) and cylinder less than -3.50 D (mean -0.81 +/- 0.71 D) were selected. Aberrometry measurements were taken with the Asclepion aberrometer in order to perform

2003 Journal of Refractive Surgery

1031. Technical improvements in photorefractive keratectomy for correction of high myopia. (Abstract)

Technical improvements in photorefractive keratectomy for correction of high myopia. To evaluate the effects of hardware and software improvements in photorefractive keratectomy (PRK) for the treatment of highly myopic eyes.A retrospective study was carried out in 554 patients (582 eyes) with myopia between -7.00 and -17.00 D (mean -11.20 +/- 3.60 D) who had undergone PRK using the Aesculap Meditec laser. Group 1 with a 5-mm-diameter single ablation zone; Group 2 with a 5-mm-diameter single

2003 Journal of Refractive Surgery

1032. Scraping and mitomycin C to treat haze and regression after photorefractive keratectomy for myopia. (Abstract)

Scraping and mitomycin C to treat haze and regression after photorefractive keratectomy for myopia. To evaluate the efficacy, safety, and predictability of therapeutic scraping and application of a diluted 0.02% mitomycin C solution to treat haze and regression after photorefractive keratectomy (PRK) for myopia.We performed a non-comparative, non-randomized retrospective study of 35 eyes of 30 patients who had previously undergone PRK for myopia and developed haze and regression after treatment

2003 Journal of Refractive Surgery

1033. Rupture of radial keratotomy incisions by blunt trauma 6 years after combined photorefractive keratectomy/radial keratotomy. (Abstract)

Rupture of radial keratotomy incisions by blunt trauma 6 years after combined photorefractive keratectomy/radial keratotomy. To report a case of traumatic corneal rupture that occurred 6 years previous, following combined radial keratotomy (RK) and photorefractive keratectomy (PRK).A 28-year-old man experienced a severe direct trauma to the right eye. Upon initial examination, a ruptured globe was diagnosed. Four of the eight radial incisions were ruptured with extrusion of intraocular tissues

2003 Journal of Refractive Surgery

1034. Central corneal haze increased by radial keratotomy following photorefractive keratectomy. (Abstract)

Central corneal haze increased by radial keratotomy following photorefractive keratectomy. To report a case of central corneal haze induced by minimally invasive radial keratotomy (mini-RK) after photorefractive keratectomy (PRK) and subsequent deep lamellar keratoplasty.We report a case (one eye of one patient) of central corneal haze that worsened after mini-RK was performed 2 years following PRK. Four years later, a second PRK was done, myopic regression was subsequently observed

2003 Journal of Refractive Surgery

1035. Ocular surface management of photorefractive keratectomy and laser in situ keratomileusis. (Abstract)

Ocular surface management of photorefractive keratectomy and laser in situ keratomileusis. To examine the effects of keratorefractive surgery and ocular surface management on goblet cell density, dry eye symptom incidence, and spherical equivalent refraction.We performed a retrospective analysis of four myopia groups: Untreated controls (n = 53); PRK (n = 51); LASIK without ocular surface management (n = 56); LASIK with ocular surface management (n = 140). Ocular surface management involved

2003 Journal of Refractive Surgery

1036. Wavefront-guided treatment for previous laser in situ keratomileusis and photorefractive keratectomy: case reports. (Abstract)

Wavefront-guided treatment for previous laser in situ keratomileusis and photorefractive keratectomy: case reports. To describe the off-label use of the Alcon LADARVision System for CustomCornea (LADARWave and LADARVision4000) in two patients, one for retreatment after laser in situ keratomileusis (LASIK) and one for retreatment after photorefractive keratectomy (PRK).Both patients were unhappy with the quality of their vision after initial refractive surgery. The first patient initially had

2003 Journal of Refractive Surgery

1037. Late corneal perforation after photorefractive keratectomy associated with topical diclofenac: involvement of matrix metalloproteinases. (Abstract)

Late corneal perforation after photorefractive keratectomy associated with topical diclofenac: involvement of matrix metalloproteinases. To report a case of a 50-year-old man who was initially seen with a corneal perforation in his right eye 2 months after a photorefractive keratectomy (PRK) procedure and to discuss the roles of topical diclofenac and matrix metalloproteinases (MMPs).Case report with tissue analysis.Ocular examination, diagnostic workup, surgical treatment, and histologic

2003 Ophthalmology

1038. Infectious keratitis after photorefractive keratectomy. (Abstract)

Infectious keratitis after photorefractive keratectomy. To elucidate risk factors, microbial culture results, and visual outcomes for infectious keratitis after photorefractive keratectomy (PRK).Multicenter, retrospective chart review, case report, and literature review.The records of 12 patients with infectious keratitis after PRK were reviewed.Causative organism, response to medical treatment, and visual outcome.Infectious keratitis developed in 13 eyes of 12 patients after PRK. Organisms

2003 Ophthalmology

1039. Medical malpractice predictors and risk factors for ophthalmologists performing LASIK and photorefractive keratectomy surgery. (Abstract)

Medical malpractice predictors and risk factors for ophthalmologists performing LASIK and photorefractive keratectomy surgery. To identify physician predictors in LASIK and photorefractive keratectomy (PRK) surgery that correlate with a higher risk for malpractice liability claims and lawsuits.Retrospective, longitudinal, cohort study.A comparison of physician demographic and practice pattern data of 100 consecutive Ophthalmic Mutual Insurance Company (OMIC) LASIK and PRK claims and lawsuits

2003 Ophthalmology

1040. Prospective study of photorefractive keratectomy for myopia using the VISX StarS2 excimer laser system. (Abstract)

Prospective study of photorefractive keratectomy for myopia using the VISX StarS2 excimer laser system. To evaluate the safety, efficacy, and predictability of excimer laser photorefractive keratectomy (PRK) for compound myopic astigmatism using the VISX StarS2 excimer laser system with international version 3.1 software.We report a prospective consecutive study of myopic excimer laser PRK, performed in a multi-surgeon environment with 200 eyes of 117 patients, to correct naturally occurring

2002 Journal of Refractive Surgery

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