Publications by authors named "Feray Koc"

Article Synopsis
  • The purpose of the study was to evaluate new human genes and variants related to ocular congenital cranial dysinnervation disorders (oCCDDs) using genetic sequencing methods.
  • Researchers prioritized 43 human genes and 57 zebrafish genes through CRISPR/Cas9 knockout assays in zebrafish, ultimately generating mutants for 17 of those genes.
  • The study identified three novel genes linked to cranial motor development and demonstrated that certain human gene variants may impair protein function, suggesting they could contribute to oCCDDs.
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Objectives: This study aimed to compare the effects of dexamethasone (DEX) implants and ranibizumab (RAN) injections in younger patients with macular edema due to branch retinal vein occlusion (RVO) in a 6-month follow-up.

Methods: The treatment-naive patients with macular edema secondary to branch RVO were included retrospectively. Medical records of patients who were treated with intravitreal RAN or DEX implant were evaluated before and at the 1, 3, and 6 months after the injection.

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: This study aimed to identify optical coherence tomography (OCT) biomarkers for predicting response to anti-VEGF treatment in diabetic macular edema (DME) Bilateral DME patients with asymmetric response to a loading dose of anti-VEGF (ranibizumab/aflibercept) treatment were retrospectively studied. The morphologic response criterion was central subfield thickness (CST) ≤300 µm; asymmetric response was defined as ≥10% difference in CST reduction between the eyes. The functional response criterion was an increase in logMAR acuity of ≥3 lines, with an increase below this threshold in the fellow eye considered asymmetric response.

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Familial exudative vitreoretinopathy (FEVR) is a rare inherited disorder of retinal angiogenesis. A 49-year-old male patient was referred to our clinic for retinal vascular occlusion. His history, clinical findings, and fundus fluorescein angiography findings were evaluated.

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Background: Data from Turkey show that sense organ diseases were the second leading cause of years lost due to disability in 2015. However, there are no reliable data on either the baseline causative disorders of visual impairment or the burden of these disorders on the population in Izmir region. Izmir is the third most populated city of Turkey with a population of approximately 4.

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Purpose: To investigate the effects of partial and full correction of refractive errors on sensorial and motor outcomes in children with refractive accommodative esotropia (RAE).

Methods: The records of pediatric cases with full RAE were reviewed; their first and last sensorial and motor findings were evaluated in two groups, classified as partial (Group 1) and full correction (Group 2) of refractive errors.

Results: The mean age at first admission was 5.

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Article Synopsis
  • - The study aimed to assess how weight loss affects vision in overweight patients with idiopathic intracranial hypertension, involving 39 newly diagnosed individuals subjected to a weight reduction program alongside medication.
  • - Participants were divided into two groups based on their adherence to the diet program, revealing that those who followed the diet (Group 1) showed significant improvements in body mass index, visual acuity, and other measures, while the non-compliant group (Group 2) saw limited improvements.
  • - The findings suggest that combining weight loss with medical treatment leads to better visual outcomes for patients with this condition, highlighting the importance of diet compliance for better health results.
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Purpose: To evaluate the etiology and possible prognostic factors affecting the visual outcome in patients with indirect traumatic optic neuropathy (TON).

Methods: The records of patients with indirect TON were reviewed and compared the results of treatment with high doses of corticosteroids (Group 1) and simple observation without treatment (Group 2).

Results: The mean age at the time of injury was 34.

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Purpose: To report the causes of persistent inferior oblique (IO) overactions after disinsertion procedure.

Methods: Surgical findings of nine eyes of eight patients who needed secondary surgery to the IO muscles because of persistent overaction after IO disinsertion were evaluated retrospectively. Inferior obliques were found partially retracted into their sheath, and some parts of the proximal muscle stumps were found to have established attachments through scar tissues to the sclera in five eyes.

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The purpose of this study was to describe a patient of orbital apex syndrome, anterior uveitis, secondary glaucoma, corneal dellen, and necrotizing scleritis following an attack of herpes zoster ophthalmicus, and the placement of a pericardial patch graft. A 64-year-old male patient with blepharoptosis of his right eye and multiple vesicles on the forehead, nose and cheeks, limitation on all gazes, blepharoptosis, and exophthalmia was eventually diagnosed with ophthalmic zona with orbital apex syndrome. After the treatment with systemic antiviral and steroid, there was complete recovery of the unilateral vesicular eruption, ophthalmoplegia, and ptosis at the third month follow-up.

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Background: The aim was to investigate the morphological changes in the fovea and choroid in patients with scleroderma and its systemic associations.

Methods: Thirty-four scleroderma patients and 31 healthy controls were enrolled. Choroidal thickness (CT) at five defined points (subfoveal [sfCT] and 1.

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Objectives: To evaluate the results of symmetric and asymmetric surgery and responses to surgical amounts in patients with infantile esotropia.

Materials And Methods: The records of patients with infantile esotropia who underwent bilateral medial rectus recession (symmetric surgery) and unilateral medial rectus recession with lateral rectus resection (asymmetric surgery) were analyzed. The results of the cases with symmetric (group 1) and asymmetric (group 2), successful (group 3) and failed (group 4) surgeries were compared, and responses to the amount of surgery were investigated.

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Purpose: To evaluate the optic nerve head parameters and peripapillary retinal nerve fiber layer using spectral-domain optical coherence tomography (SD-OCT) in a systemic sclerosis (SSc) cohort and age-matched controls to determine whether SSc patients have an increased risk of normal-tension glaucoma (NTG).

Methods: We examined 30 patients (3 male, 27 female) with SSc and 28 age- and sex-matched controls. Retinal nerve fiber and optic disc morphology were evaluated using Cirrus SD-OCT.

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Cerebellar agenesis (CA) is an extremely rare entity. We present two adult patients with CA. The 61-year-old man had ataxia, dysarthria, abnormalities in cerebellar tests, severe cognitive impairment, and moderate mental retardation.

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To evaluate main numerical parameters of anterior segment and the effects of eyelid skin changes on these parameters in patients with systemic sclerosis (SSc). Thirty-four patients with SSc and 34 healthy individuals were enrolled. Besides full eye examination, anterior segment measurements including anterior chamber depth (ACD), anterior chamber volume, anterior chamber angle width, central corneal thickness, pupil size, corneal volume and keratometry were obtained using a Sirius Scheimpflug/Placido photography-based topography system.

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A 34-year-old woman was hospitalised with acute onset nausea, vomiting, ataxia, nystagmus, blurred vision, and bilateral mydriasis. Toxicologic investigations and serologic tests for infectious aetiologies were negative. Demyelinating disease was suspected based on magnetic resonance imaging (MRI) findings but there were no lesions at the midbrain explaining bilateral mydriasis.

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Background: To report the effect of restoration of binocular functions in adult strabismus on the health-related quality of life (HRQOL).

Methods: 61 adults undergoing strabismus surgery completed Adult Strabismus-20 (AS-20) and Amblyopia and Strabismus (A&SQ) HRQOL questionnaires preoperatively and postoperatively. Patients were grouped according to their responses to binocular tests as binocular vision positive (BVP) and binocular vision negative (BVN) groups.

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Article Synopsis
  • Eight heterozygous missense mutations in the TUBB3 gene lead to various nervous system disorders collectively termed TUBB3 syndromes, primarily causing ocular motility issues like CFEOM3, along with potential intellectual and behavioral impairments.* -
  • Neuroimaging studies show abnormalities in the brain's structure, including underdeveloped oculomotor nerves and malformations in key areas like the corpus callosum and corticospinal tracts.* -
  • Research using a mouse model indicates that these mutations can cause defects in axon guidance without affecting cell migration, while laboratory experiments reveal that the mutations impair the formation of tubulin structures necessary for proper cellular function.*
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Background: Congenital fibrosis of the extraocular muscles types 1 and 3 (CFEOM1/CFEOM3) are autosomal dominant strabismus disorders that appear to result from maldevelopment of ocular nuclei and nerves. We previously reported that most individuals with CFEOM1 and rare individuals with CFEOM3 harbor heterozygous mutations in KIF21A. KIF21A encodes a kinesin motor involved in anterograde axonal transport, and the familial and de novo mutations reported to date predictably alter one of only a few KIF21A amino acids--three within the third coiled-coil region of the stalk and one in the distal motor domain, suggesting they result in altered KIF21A function.

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Background: Autonomic denervation is common in diabetes mellitus (DM). Pupillary sympathetic denervation (PSD) has been found in Horner syndrome following instillation of apraclonidine 0.5%.

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Purpose: To investigate the risk factors that influence outcome of visual function in children with glaucoma.

Design: Retrospective noncomparative interventional case series.

Participants: One hundred twenty-six patients (204 eyes) who had childhood glaucoma observed over 30 years, with a mean follow-up of 11.

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Aim: To present our experience with single-stage adjustable strabismus surgery (SSASS) under topical anesthesia and propofol.

Materials And Methods: Sixteen patients who either had diplopia before the surgery or were at risk of developing diplopia after the surgery were selected for this operation after evaluating their tolerance for an eyelid speculum. Recession of the lateral recti, recession, resection and advancement of the medial recti, anteriorization of the inferior oblique and marginal myotomy to the superior rectus were the procedures done under topical anesthesia and propofol.

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Purpose: To assess the correlation between the serum leptin concentration and ocular involvement in patients with Behçet's disease.

Methods: The study included 28 male consecutive patients with Behçet's disease ( group A, aged 19-59, median 35.5 years) and 15 male healthy control subjects ( group B, aged 25-45, median 35 years).

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Purpose: To investigate changes in corneal shape and anterior segment following retinal detachment surgery.

Material And Methods: 25 consecutive patients with retinal detachment were enrolled in this study. Computer-assisted videokeratography was performed before and after retinal detachment surgery and changes in the anterior segments of postoperative patients were also noted.

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