Semra Akkaya Turhan

ORCID: 0000-0001-8322-1842
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Corneal surgery and disorders
  • Ocular Surface and Contact Lens
  • Glaucoma and retinal disorders
  • Ophthalmology and Visual Impairment Studies
  • Corneal Surgery and Treatments
  • Intraocular Surgery and Lenses
  • Kawasaki Disease and Coronary Complications
  • IgG4-Related and Inflammatory Diseases
  • Multiple Sclerosis Research Studies
  • Retinal and Optic Conditions
  • Retinal Diseases and Treatments
  • Olfactory and Sensory Function Studies
  • Ergonomics and Musculoskeletal Disorders
  • Retinal and Macular Surgery
  • Ophthalmology and Eye Disorders
  • Nerve injury and regeneration
  • Salivary Gland Disorders and Functions
  • Rabies epidemiology and control
  • Ocular Oncology and Treatments
  • Virus-based gene therapy research
  • Schizophrenia research and treatment
  • Neurological Complications and Syndromes
  • Post-Soviet Geopolitical Dynamics
  • Acne and Rosacea Treatments and Effects
  • Ocular Disorders and Treatments

Marmara University
2016-2025

Marmara Üniversitesi Eğitim ve Araştırma Hastanesi
2024

Mustafa Kemal University
2020

Objective: Chemical eye injuries are ophthalmic emergencies that require rapid intervention. It can cause extensive damage to the ocular surface and anterior segment leading severe visual impairment. In this study, we aimed report clinical findings outcomes of patients with chemical injuries. Methods: A total 59 eyes 50 who were followed up treated diagnosis injury in Marmara University Ophthalmology Department between 2013 2020 included study. Demographic data analyzed. Results: Mean age...

10.33808/clinexphealthsci.1485598 article EN Clinical and Experimental Health Sciences 2025-03-23

Objective To assess the impact of eye drops containing high molecular weight hyaluronic acid (HMW-HA) and low (LMW-HA) on corneal nerve regeneration, dendritic cell (DC) density, sensitivity (CS) ocular surface parameters in patients with keratoconus following crosslinking (CXL). Methods analysis 63 eyes 55 were randomised to receive HMW-HA (n: 20) for 12 months, LMW-HA 23) months polyvinyl alcohol until closure epithelial defect control group after CXL. Subbasal plexus (SNP) was imaged...

10.1136/bmjophth-2024-001890 article EN cc-by-nc-nd BMJ Open Ophthalmology 2025-03-01

PURPOSE: To compare the efficacy and safety of accelerated corneal cross-linking (CXL) with conventional CXL in pediatric patients keratoconus. METHODS: Consecutive keratoconus received either (9 mW/cm 2 irradiance for 10 minutes) or (3 irradiance) 30 minutes. Visual acuities (uncorrected [UDVA] corrected [CDVA] distance visual acuity, logMAR), spherical error, cylindrical equivalent, keratometric values were recorded. Follow-up measurements compared baseline values. RESULTS: The study...

10.3928/1081597x-20200302-01 article EN Journal of Refractive Surgery 2020-04-01

Abstract This study aims to develop gelatin methacryloyl (GelMA)‐based symblepharon rings fortified with l ‐ascorbic acid (lAA), aiming for controlled release of vitamins the treatment ocular surface, corneal healing, and acceleration epithelial growth, while concurrently preventing potential inflammation. The human tears contain abundant IAA, which serves a protective role tissues. utilization 3D printing digital light processing technology not only navigating manufacturing process rings,...

10.1002/mame.202400057 article EN cc-by Macromolecular Materials and Engineering 2024-06-18

Purpose: To evaluate the effectiveness of repeated corneal collagen cross-linking (CXL) in eyes with progressive keratoconus after primary CXL. Methods: Twelve 10 patients who underwent CXL were included this study. All cases treated a second when disease progression was noted. Uncorrected visual acuity, best-corrected distance and tomography performed before Common risk factors for recorded. Results: The mean age 23.4 ± 6.2 (14–34) years. Eye rubbing detected 6 patients. preoperative...

10.1097/ico.0000000000002128 article EN Cornea 2019-08-30

Purpose: To determine and compare the changes in corneal density after 2 different protocols of accelerated collagen cross-linking (A-CXL) patients with progressive keratoconus. Methods: Two groups eyes received A-CXL treatment; 20 using continuous UVA light exposure at 9 mW/cm for 10 minutes a total energy dose 5.4 J/cm , 24 30 4 7.2 . Corneal was measured Scheimpflug tomography 1, 3, 6, 12 months follow-up. Results: Densitometry peaked 1 month (mean: 16.34 ± 3.80, P = 0.006, 9-mW/cm A-CXL;...

10.1097/ico.0000000000001362 article EN Cornea 2017-08-31

To evaluate the lens edge interaction with ocular surface different designs using optical coherence tomography and to examine effect of power on interactions.Four types silicone hydrogel lenses (round-, semi-round-, chisel-, knife-edged) at six powers (+5.0, +3.0, +1.0, -1.0, -3.0, -5.0 diopters) were fitted both eyes 20 healthy volunteers. Optical images taken corneal center limbus within 15-30 minutes after insertion. The evaluated respect two parameters: conjunctival indentation exerted...

10.2147/opth.s83798 article EN cc-by-nc Clinical ophthalmology 2015-05-01

The aim of the study was to assess efficacy a topical regenerating agent (RGTA) for management persistent epithelial defects (PEDs) resistant conventional therapy.Twenty-one patients (23 eyes) with PEDs despite use therapy lagophthalmos (n = 4), neurotrophic ulcer 9), chemical burn 3), Stevens-Johnson syndrome 1), atopic keratoconjunctivitis severe dry eye 2), peripheral ulcerative keratitis fungal and bacterial 1) were enrolled in study. Patients treated RGTA (Cacicol; Thea, Paris, France)...

10.1089/jop.2018.0025 article EN Journal of Ocular Pharmacology and Therapeutics 2018-10-12

To evaluate the accuracy of intraocular lens (IOL) power calculation using an optical low-coherence reflectometry (OLCR) biometer and to compare results with those obtained immersion ultrasound biometry (IUB).Biometric measurements were OLCR IUB combined automated keratometry before cataract surgery. The mean prediction error (MPE) absolute (MAE) calculated for five various IOL formulas (SRK II, SRK/T, Holladay, Hoffer Q, Haigis), two different methods compared.Optical measured a slightly...

10.1097/icl.0000000000000111 article EN Eye & Contact Lens Science & Clinical Practice 2015-02-27

The purpose of this study was to investigate the effect high molecular weight hyaluronan (HMWHA) eye drops on subbasal corneal nerves in patients suffering from severe dry disease (DED) and evaluate damage associated with DED. Designed as an international, multicenter study, 16 symptoms at least Ocular Surface Disease Index (OSDI) score 33, fluorescein staining (CFS) Oxford grade 3, were included randomized into two arms. control group continued use their individual optimum artificial tears...

10.3390/jcm9123799 article EN Journal of Clinical Medicine 2020-11-24

Objectives: To assess the visual performance of a mini-scleral lens in patients with keratoconus and to evaluate its fit by optical coherence tomography (OCT).Materials Methods: Twenty-nine eyes 24 were fitted (Esclera; Mediphacos Inc., Belo Horizonte, Brazil).Diagnostic lenses used initial fitting process.The was evaluated fluorescein pattern also anterior segment OCT (RTVue, Optovue Fremont, CA).Within 30-45 minutes after insertion, parameters including central corneal limbal clearance,...

10.4274/tjo.galenos.2020.56804 article EN cc-by-nc-nd Turkish Journal of Ophthalmology 2020-12-29

Abstract Introduction/Aims In patients with amyotrophic lateral sclerosis (ALS), axonal spheroids in motor axons have been identified post‐mortem studies. this study, and swellings on C‐fibers of ALS were investigated using corneal confocal microscopy (CCM) skin biopsy, respectively. Methods Thirty‐one 20 healthy subjects evaluated CCM to assess nerve‐fiber length (CNFL), ‐fiber density (CNFD), ‐branch (CNBD), dendritic cell (DC) density, originating from (>100 μm 2 ). addition,...

10.1002/mus.27995 article EN cc-by-nc-nd Muscle & Nerve 2023-11-20

Purpose: To determine the impact of optical density changes in postlens fluid on clinical performance and to quantify these over time during miniscleral lens wear. Methods: Twenty-three eyes 13 patients with keratoconus were fitted a (scleral Misa lenses; Microlens Contactlens Technology, Arnhem, Netherlands). The fit was evaluated using fluorescein pattern also through anterior segment coherence tomography imaging. measured Scheimpflug at 30 min, 1, 2, 3, 4 hr. High- low-contrast visual...

10.1097/icl.0000000000000674 article EN Eye & Contact Lens Science & Clinical Practice 2019-11-29

A 6-year-old boy was referred to our hospital with orbital cellulitis. He had a history of 7 days fever despite antibiotherapy. At first, he only pharyngitis and conjunctivitis, but then an mass evolved which restricted the movement his right eye there also periorbital inflammation resembling Examination at presentation revealed conjunctivitis secretion, periocular edema, right-preauricular lymphadenopathy restriction upgaze in eye. Laboratory findings included white blood cell count 19,000...

10.1159/000357258 article EN cc-by-nc Case Reports in Ophthalmology 2013-12-11

Purpose: To evaluate the early- and long-term effects of 2 different blepharoplasty techniques on corneal nerves, meibomian gland morphology, clinical parameters dry eye disease (DED), eyebrow position. Methods: This prospective, interventional study included age-sex-matched patients who had a skin-only resection (24 eyes 12 patients; Group-S) or skin-plus-orbicularis muscle Group-M) procedure. Preoperative postoperative in vivo confocal microscopy (IVCCM; nerve fiber density [CNFD], branch...

10.1097/iop.0000000000002376 article EN Ophthalmic Plastic and Reconstructive Surgery 2023-03-27
Coming Soon ...