Photorefractive keratectomy in patients with suspected keratoconus: five-year follow-up.

نویسندگان

  • Mikael Guedj
  • Alain Saad
  • Etienne Audureau
  • Damien Gatinel
چکیده

PURPOSE To assess the long-range outcomes of photorefractive keratectomy (PRK) using functional and topographic criteria in myopic eyes with suspected keratoconus. SETTING Rothschild Foundation, Paris, France. DESIGN Retrospective interventional case series. METHODS Eyes of patients classified as keratoconus suspects or keratoconus by the Corneal Navigator software of the OPD-Scan II device were included. They were treated with myopic PRK using an EC-5000 excimer laser between 2004 and 2007. The main outcome measures were refractive stability, mean corneal keratometry, mean central pachymetry, mean thinnest point value, and the occurrence of postoperative complications such as corneal ectasia. RESULTS The study evaluated 62 eyes of 42 patients. The mean patient age was 34.6 years ± 15.1 (SD) and the mean spherical equivalent (SE), -3.96 ± 3.05 diopters (D). The mean central pachymetry was 529.4 ± 32.8 μm and the mean simulated keratometry, 45.75 ± 1.75 D. The percentage of similarity to keratoconus suspects or keratoconus was positive in all 62 eyes and exceeded a 50% similarity score in 30 eyes (48.4%). The mean follow-up was 4.8 ± 1.4 years. The mean magnitude of the SE was -0.53 ± 1.35 D over the follow-up. Two patients required glasses postoperatively because of significant myopic regression. No case of corneal ectasia was reported. CONCLUSION Photorefractive keratectomy in eyes with suspected keratoconus based on a Placido neural network may be safe and effective for myopia and astigmatism in carefully selected patients.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Photorefractive keratectomy in patients with mild to moderate stable keratoconus: a five-year prospective follow-up study

BACKGROUND The purpose of this study was to evaluate the visual outcome of photorefractive keratectomy (PRK) in patients with mild to moderate stable keratoconus and to assess the risk of progression of the disease after the excimer laser procedure. METHODS In this prospective study, carried out at the Clemenceau Medical Center, an affiliate of Johns Hopkins International, in Beirut, Lebanon,...

متن کامل

Results of photorefractive keratectomy in keratoconus suspects at 4 years.

PURPOSE We studied the long-term results of photorefractive keratectomy (PRK) in keratoconus suspects detected by videokeratography (TMS). METHODS Bilateral inferior corneal steepening was detected in 6 candidates for PRK presenting with moderate myopia or astigmatism. Mean follow-up was 44.5 +/- 4.4 months (range, 38 to 54 mo). Mean spherical equivalent refraction was -5.18 +/- 1.60 D (mean ...

متن کامل

Simultaneous topography-guided photorefractive keratectomy followed by corneal collagen cross-linking for keratoconus.

PURPOSE To present the long-term results after simultaneous photorefractive keratectomy followed by corneal collagen cross-linking for keratoconus. DESIGN Prospective, interventional, consecutive case series. METHODS In this study, 26 patients (31 eyes) with progressive keratoconus were included. All patients underwent customized topography-guided photorefractive keratectomy immediately fol...

متن کامل

Photorefractive Keratectomy in Keratoconus

PURPOSE To assess the efficacy and safety of topography-guided photorefractive keratectomy (PRK) for keratoconus and to estimate the subsequent risk of progression. METHODS This is a retrospective follow-up study. Between 1998 and 2013, 28 eyes of 23 patients (age 17-60) with grade 1-3 keratoconus received topography-guided PRK. Corrected-distance visual acuity (CDVA), keratometry, pachymetry...

متن کامل

Simultaneous Topography-Guided Photorefractive Keratectomy and Accelerated Corneal Collagen Cross-Linking for Keratoconus.

PURPOSE To study the evolution of visual and refractive outcomes through the first year after simultaneous topography-guided photorefractive keratectomy (t-PRK) and corneal collagen cross-linking (CXL) in keratoconus. METHODS This retrospective case series included 85 eyes of 66 patients with a mean age of 26.3 ± 5.7 years, which underwent simultaneous t-PRK with accelerated CXL. Patients wer...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Journal of cataract and refractive surgery

دوره 39 1  شماره 

صفحات  -

تاریخ انتشار 2013