Objectives: The objective of this study was to analyze the changes in the effective optical zones (EOZ) using topographic techniques on the tangential curvature difference map at post-operative 1-year following transepithelial photorefractive keratectomy (T-PRK) and to identify parameters linked to the EOZ alterations.
Methods: The study comprised 55 eyes of 55 myopic patients who underwent T-PRK. EOZs were measured using the tangential curvature difference map of the Scheimpflug tomography system.
Purpose: To compare the effective optical zones (EOZs) of small-incision lenticule extraction (SMILE) and femtosecond laser-assisted in situ keratomileusis (F-LASIK) by utilizing topographic methods on the tangential curvature difference map at postoperative 1 year and to identify parameters linked to the EOZ alterations following both surgeries.
Methods: Myopic patients who underwent SMILE or F-LASIK were included in the study. Patients with refractive error greater than -9.
A case of Wilson disease (WD) combined with keratoconus (KC) is described. A 30-year-old male diagnosed with WD presented to Ophthalmology Department due to progressive bilateral vision loss. Biomicroscopy revealed copper depositional ring and mild central corneal ectasia in both eyes.
View Article and Find Full Text PDFPurpose: To evaluate the long-term refractive outcomes of Eyecryl posterior chamber spherical phakic intraocular lens (pIOL) implantation in high myopia and endothelial cell density (ECD) change.
Setting: Beyoglu Eye Training and Research Hospital, Istanbul, Turkey.
Design: Retrospective.
In June 2020, a 28-year-old female patient was admitted to our clinic with reduced vision in the left eye. She had systemic COVID-19 infection in May 2020 and during her treatment course, her visual complaints had begun approximately 1 week after the beginning of the COVID-19. Previously, the patient had bilateral femtosecond assisted - Laser in situ Keratomileusis in our clinic in 2018.
View Article and Find Full Text PDFPurpose: To examine the efficacy of phototherapeutic keratectomy as a treatment for variable pathologies with anterior corneal opacities and evaluate the distribution of phototherapeutic keratectomy indications over the past 10 years.
Methods: The records of 334 eyes from 276 patients who underwent phototherapeutic keratectomy between March 2010 and 2020 were retrospectively reviewed. Etiologies of the patients who underwent phototherapeutic keratectomy were noted, and their changes were examined.
Purpose: The aim of this study was to investigate the association of anatomical outcomes and medications of patients with systemic diseases who underwent Descemet membrane endothelial keratoplasty with donor factors.
Methods: Sixty nondiabetic donors of endothelial grafts and 60 patients who underwent operation by a single surgeon were included in this retrospective study. The patients' data, including the presence of diabetes mellitus and hypertension, antidiabetic-antihypertensive medications, and intracameral tamponades and anatomical outcomes, were recorded.
Objectives: This study was designed to evaluate the effects of corneal collagen cross-linking (CXL) on topographic parameters, visual acuity, and corneal high-order aberrations according to the preoperative cone location in keratoconus.
Methods: This retrospective study assessed patients with keratoconus who underwent CXL between March 2016 and February 2019. Patients with a history of corneal surgery, corneal hydrops, corneal scar tissue, delayed epithelial healing, and a corneal thickness of <400 μm were excluded.
Described herein are the cases of 2 patients who underwent bilateral femtosecond-assisted laser in situ keratomileusis (FS LASIK) surgery and subsequently developed unilateral postLASIK ectasia. The fellow eye of both patients was topographically normal, their visual acuity was 20/20, and the patients had no visual symptoms. However, a biomechanical assessment using the Corvis ST tonometer (Oculus Optikgerate GmbH; Wetzlar, Germany) revealed remarkable weakness not only in the ectatic eyes, but also in the fellow eye.
View Article and Find Full Text PDFObjectives: This study was conducted to compare refractive error measurements recorded using the Nidek HandyRef-K handheld autorefractometer (HDY; Nidek Co. Ltd., Tokyo, Japan), Plusoptix A09 photorefractor (PO; Plusoptix GmbH, Nuremberg, Germany), Retinomax K-plus 3 (RTX; Right Mfg.
View Article and Find Full Text PDFBackground: To evaluate the microvascularity and choroidal vascularity index (CVI) using optical coherence tomography angiography (OCTA) and OCT following femtosecond laser-assisted in-situ keratomileusis (FS-LASIK) and small incision lenticule extraction (SMILE) procedures.
Methods: Patients with myopia (<-6.0D sphere) or myopic astigmatism (<-4.
Purpose: The aim is to report long-term graft survival rates and clinical outcomes of Descemet membrane endothelial keratoplasty (DMEK).
Methods: In this study 150 eyes that underwent DMEK whether for Fuchs endothelial corneal dystrophy (FECD) or for bullous keratopathy (BK) surveilled for 7 years at 6 time points to evaluate graft survival rates and clinical outcomes of post-corneal transplantation.
Results: Overall, the estimated survival probability of 95% confidence interval at 7 years of post-DMEK was 0.
Purpose: We investigated the effect of the time of secondary intraocular lens (IOL) implantation on final visual acuity and other causes affecting visual prognosis in cases left aphakic after open globe injury.
Methods: The study included 62 eyes of 62 patients left aphakic after the repair of open globe injury between 2012 and 2019. Demographic characteristics, trauma zone, ocular trauma score, type of injury, time of secondary IOL implantation, final best-corrected visual acuity (BCVA), and complications were recorded for each patient.
Purpose: Evaluating efficacy and safety of iris-supported phakic lenses (Verisyse) for high myopia treatment.
Methods: Patients treated with Verisyse (Abbott Medical Optics, Santa Ana, CA, USA) intraocular lens (IOL) implants were evaluated retrospectively. Patients with follow-up periods of more than 5 years were included in the study.
Vitamin A has an essential role in the maintenance of corneal and conjunctival epithelization, as well as photoreceptor transduction in the retina. A deficiency of vitamin A causes keratinization of the surface epithelium, and night blindness is often the first symptom. This report describes a case of chronic intestinal pseudo-obstruction (CIPO), a rare and potentially fatal disease, diagnosed following detection of a vitamin A deficiency in an ophthalmological examination.
View Article and Find Full Text PDFPurpose: To compare the long-term refractive and visual outcomes and the corneal higher-order aberrations of contralateral eyes of patients who received small-incision lenticule extraction (SMILE) in one eye and femtosecond laser-assisted laser in situ keratomileusis (FS-LASIK) in the other eye.
Setting: Refractive Surgery Clinic of the University of Health Sciences Beyoğlu Eye Training and Research Hospital, Istanbul, Turkey.
Design: Retrospective case series.
J Cataract Refract Surg
April 2019
Purpose: To report long-term efficacy and safety of small-incision lenticule extraction (SMILE) in patients with mild-to-moderate myopia.
Setting: Beyoglu Eye Training and Research Hospital, İstanbul, Turkey.
Design: Retrospective case series.
Purpose: To report long-term visual and refractive results of small-incision lenticule extraction (SMILE) in treatment of high myopia.
Materials And Methods: Medical records of patients who underwent SMILE for surgical correction of myopia or myopic astigmatism were retrospectively reviewed. Only patients with a preoperative spherical equivalent of subjective manifest refraction (SE) ≥ 6 D and a postoperative follow-up of 5 years were included in the study.
Purpose: To evaluate the visual, refractive, and topographic outcomes after simultaneous topography-guided transepithelial photorefractive keratectomy (transepithelial TG-PRK) using the Amaris Excimer laser platform and accelerated corneal cross-linking (CXL) in eyes with keratoconus.
Materials And Methods: Patients with 2 years of follow-up were included in this retrospective case series. Manifest refraction (MR), uncorrected (UDVA) and corrected (CDVA) distance visual acuity, corneal topography, and pachymetry were evaluated at 1, 3, 6, 12, and 24 months after surgery.
Purpose: Pseudoexfoliation syndrome has been linked to impaired function of the heart and blood vessels. We conducted a study to investigate the role of the renin-angiotensin system in the etiopathogenesis of pseudoexfoliation syndrome.
Methods: The subjects were 14 patients with pseudoexfoliation syndrome and 14 healthy controls who underwent cataract extraction.
To evaluate the outcome after astigmatic correction of small incision lenticule extraction (SMILE) and to compare the refractive results of right eyes with left eyes. Patients who underwent SMILE surgery in our clinic between 2014 and 2016 (Visumax, Carl Zeiss Meditec, Germany) were retrospectively reviewed. Preoperative and postoperative manifest refractions and corrected and uncorrected visual acuities were evaluated and changes in refractive astigmatism were evaluated by vector analysis.
View Article and Find Full Text PDFPurpose: To evaluate a simpler approach of the medial transposition of split lateral rectus technique in patients with complete third nerve palsy.
Methods: All eyes with complet third nerve palsy were followed in our Strabismus Department between 2014 and 2016. All patients had complete oculamotor nerve palsy.