Publications by authors named "Sayin N"

The primary ocular effect of diabetes is diabetic retinopathy (DR), which is associated with diabetic microangiopathy. Diabetic macular edema (DME) can cause vision loss for people with DR. For this reason, deciding on the appropriate treatment and follow-up has a critical role in terms of curing the disease.

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Hypertensive disorders of pregnancy are significant contributors to maternal and perinatal morbidity and mortality. The definition, classification, and management of these disorders have evolved over time. Notably, the disease classification enables caretakers to manage the disease as well as safeguard maternal and fetal health.

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A female infant born with a gestational age of 35 weeks and birth weight of 2500 g was referred for ophthalmic examination on the second postnatal day. Bilateral venous dilatation and arterial tortuosity, severe extraretinal fibrovascular proliferation, and peripheral ischemia were detected. Fluorescein angiography showed profoundly delayed arteriovenous transit and peripheral avascularity.

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Bernard Soulier Syndrome (BSS) is an inherited bleeding disorder characterized by macrothrombocytopenia and absence of ristocetin-induced platelet aggregation. Clinical findings vary from person to person. Most of the patients are diagnosed with muco-cutaneous bleeding such as purpura, epistaxis and gingival bleeding in early childhood.

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Purpose: This study sought to investigate whether asprosin can be used in the diagnosis of GDM or for diagnostic purposes in high-risk pregnancies, along with a review of other parameters that may be associated with serum asprosin levels.

Patients And Methods: The study investigated the association between gestational diabetes mellitus (GDM) and asprosin levels. A total of 93 participants; 30 patients with GDM, 33 healthy pregnant women with normal glucose tolerance (NGT), and 30 healthy non-diabetic women (control group) at the Endocrinology and Metabolic Diseases outpatient clinic of a tertiary care university hospital were enrolled in the study.

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Purpose: We evaluated changes in ocular and periocular elasticity by ultrasound (US) elastography in intravitreal ranibizumab-treated eyes and the healthy fellow eyes of patients with neovascular AMD.

Methods: The study was performed on 52 eyes of 26 volunteers who ranged in age from 59 to 89 (mean 72±7.78) years old.

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Objectives: The aim of the study was comparison of wet-type age-related macular degeneration in phakic and pseudophakic patients in terms of anatomical and functional success based on the real-life data of Türkiye.

Methods: The multicenter retrospective real-life study data of the. retinal study group were used in this study.

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Background And Objective: To investigate the progression of retinal vascularization after 60 weeks postmenstrual age (PMA) in eyes treated with intravitreal bevacizumab (IVB).

Patients And Methods: Twenty-seven eyes that were treated with IVB and underwent two consecutive fluorescein angiographies (FA) after 60 weeks PMA. Horizontal disc diameter (DD), disc-to-fovea (DF) distance, and length of temporal retinal vascularization (LTRV) were measured in pixels on the two consecutive angiograms.

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Background: To investigate the anatomical and visual outcomes of the patients with neovascular age-related macular degeneration (nAMD) treated with anti-vascular endothelial growth factor (anti-VEGF), according to the baseline best-corrected visual acuity (BCVA) based on the multicenter real-life data.

Methods: Five-hundred-ninety patients who had taken the Pro Re Nata (PRN) treatment regimen with three loading doses and at least one year of follow-up were included. The patients were divided into three groups according to the baseline BCVA: Group 1 (BCVA ≥ 1.

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Objectives: This study aims to analyze the posterior segment of the eye in children with thalassemia major (TM) treated with chelation therapy.

Methods: Forty-four patients diagnosed with TM and 44 age- and gender-matched participants without systemic diseases were included in this cross-sectional comparative study. A complete ophthalmologic examination, including visual acuity and fundus examination, was performed on all participants.

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Purpose: To report the anatomic and refractive outcomes and retinal vascular outgrowth in eyes with posterior zone Ⅰ retinopathy of prematurity (ROP) treated with intravitreal bevacizumab (IVB).

Methods: Thirty-eight eyes of 21 infants treated with IVB for type 1 and aggressive-ROP, and whose posterior border of retinal vascularization was shorter than the optic disc-to-fovea distance were defined as posterior zone Ⅰ and included in the study.

Results: Nine eyes of five infants whose follow-up time was lower than four months were accepted as insufficient for clinical outcomes.

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Purpose: The study aimed to investigate the relationship between refractive outcomes with the extent of retinal vascularization and severity of the plus disease in infants treated with intravitreal bevacizumab (IVB).

Methods: Pre-IVB fundus images (PFIs), final fundus images (FFIs), and refractive outcomes of the 93 infants who underwent IVB monotherapy for type 1 and aggressive retinopathy of prematurity (A-ROP) were retrospectively evaluated. Quantitative measurements were performed on PFIs and FFIs.

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Purpose: This study aims to assess the difference between Tono-Pen and Schiotz tonometer measurements in gas-filled eyes and to create a nomogram and equation which can be used to estimate actual intraocular pressure in order to provide a safe IOP level at the end of the surgery.

Methods: Twenty-two eyes that underwent pars plana vitrectomy were included in the study. Perioperative Tono-Pen and Schiotz tonometer measurements were performed when the eyes were filled with air in the setting of certain vitrectomy infusion pressure levels.

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Purpose: To compare refractive outcomes of infants with type 1 retinopathy of prematurity (ROP) in whom one eye was treated with laser and the fellow eye spontaneously regressed.

Methods: The medical records of infants who underwent IVB and laser treatment for type 1 ROP or aggressive posterior-ROP between January 2016 and December 2019 were retrospectively evaluated. Infants in whom ROP in the fellow eye regressed and for whom refractive data was available in the record were included in the study.

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Purpose: To evaluate the fluorescein angiography (FA) findings in eyes with spontaneously regressed retinopathy of prematurity (ROP).

Methods: Fluorescein angiography images of 162 eyes of 81 treatment-naive infants who underwent FA due to retinal vascular immaturity and persistent avascular retina (PAR) despite exceeding postmenstrual age of 60 weeks were analyzed retrospectively. Disc diameter (DD), optic disc-to-fovea distance (FD), the length of temporal retinal vascularization (LTRV), and the length of measurable temporal avascular retina distance (LMTAR), were quantitatively measured.

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Purpose: To evaluate the factors that may be associated with refractive outcome in eyes treated with intravitreal bevacizumab (IVB) injection for retinopathy of prematurity (ROP).

Methods: Retrospective case series. Refractive outcomes of 181 infants who were treated with primary IVB for Type I ROP or aggressive ROP, were retrospectively evaluated.

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Purpose: To compare retinal vascularization progression rate, final retinal vascularization, and fluorescein angiography (FA) findings in infants who received intravitreal bevacizumab (IVB) treatment in one eye and with spontaneous regression in the other eye.

Methods: Thirty eyes of 15 infants who underwent IVB in one eye due to asymmetric retinopathy of prematurity, and who had pre-treatment fundus photographs and fluorescein angiography images were included in the study. Horizontal disc diameter (DD), optic disc-to-fovea distance (FD), and the length of temporal retinal vascularization (LTRV) distance were measured by evaluating pre-treatment and FA images.

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Introduction: In this study, we investigated the effect of drug dose on the progression of retinal vascularization in eyes treated with different doses of intravitreal bevacizumab (IVB).

Methods: The patient charts of 259 eyes of 142 patients who were administered 0.3125 mg or 0.

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The coexistence of a hydatidiform mole and a fetus can occur in a multiple pregnancy, being less frequent in triplets and quadruplets because of their infrequency. With assisted reproduction, multiple pregnancies are becoming more frequent, and we can expect more frequent coexistence with a molar pregnancy. This G3, P1 30-year-old mother, after assisted conception, was diagnosed with a quadruplet pregnancy, one of which was a molar conceptus.

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This study was carried out to determine the effect of treatment on quality of life, symptoms, and social life in patients with gynecologic cancer. Data were collected through face-to-face interviews to evaluate the individual and disease characteristics of the patients. The Edmonton Symptom Assessment Scale was used to determine the severity of the side effects.

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Objectives: To compare anterior segment parameters and biomechanical analysis of the cornea in children with joint hypermobility (JH) and healthy children.

Materials And Methods: Cross-sectional case-control study. Fifty eyes of 25 children with JH were compared with 74 eyes of 37 healthy age- and sex-matched controls in terms of refractive, anterior segment topographic, and corneal biomechanical measurements.

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Aim: To compare two different anti-vascular endothelial growth factor (anti-VEGF) treatment regimens'-a priori (PRN) and PRN regimen following the loading phase-anatomical and functional results in neovascular age-related macular degeneration (nAMD) patients.

Methods: Totally 544 nAMD patients followed and treated with aflibercept (=135) and ranibizumab (=409) at 9 different centers between 2013 and 2015 were enrolled into this retrospective multicenter study. Patients with initial best corrected visual acuity (BCVA) interval of 1.

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Cloacal dysgenesis sequence occurs as a result of complete developmental failure of the urorectal septum. Typically, the sequence is featured by a smooth perineum, without any urethral, genital or anal openings. Its clinical manifestation differs throughout gestation.

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Objective To investigate the relationship between brain masculinization and retinal thickness in children with congenital adrenal hyperplasia (CAH). Methods Forty-five patients with CAH aged between 4 and 18 years and 30 age-matched healthy controls were included in this prospective study. Macular area was examined with optical coherence tomography (OCT); central subfield thickness (CST), cube volume (CV) and macular retinal thickness (MT) were measured in each subject.

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