Hamid Riazi-Esfahani

Hamid Riazi-Esfahani
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Hamid verified their affiliation via an institutional email.
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Hamid verified their affiliation via an institutional email.
Tehran University of Medical Sciences | TUMS · Eye Research Center

Associate professor of ophthalmology

About

169
Publications
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Introduction
Hamid Riazi currently works at Farabi eye hospital as a associate professor of ophthalmology. Hamid does research in Ophthalmology.

Publications

Publications (169)
Article
Objective: To demonstrate the value of "smoothness index (SI)" as a novel tool for quantitative analysis of iris surface findings in unilateral Fuchs' uveitis (FU). Methods: Both phakic eyes from patients with unilateral FU as well as healthy control subjects underwent anterior segment optical coherence tomography (AS-OCT). The ImageJ software w...
Article
Tamoxifen (TAM) is a selective estrogen receptor modulator that is used in the treatment of breast cancer. As there are estrogen receptors in the retina, retinal pigment epithelium, and choroid, these tissues may also be affected by TAM. We describe the reported effects of TAM on the retina and choroid. Medical databases were searched using relevan...
Article
Full-text available
Retinitis pigmentosa (RP) is an inherited, bilateral retinal degenerative disease with an incidence of 1 in 4000 people. RP affects more than one million individuals worldwide. Even though night blindness and restricted visual field are the most typical symptoms of these individuals, generalized vision loss due to cataracts can be expected in the l...
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Purpose To evaluate the efficacy and toxicity of intravitreal carboplatin plus melphalan for the treatment of vitreous seeds in eyes with retinoblastoma (RB). Methods This retrospective series at a tertiary referral center included 22 consecutive RB patients who had received intravitreal carboplatin (16 μg per 0.05 ml) combined with melphalan (30...
Article
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PurposeThe study aims to classify the eyes with proliferative diabetic retinopathy (PDR) and non-proliferative diabetic retinopathy (NPDR) based on the optical coherence tomography angiography (OCTA) vascular density maps using a supervised machine learning algorithm.MethodsOCTA vascular density maps (at superficial capillary plexus (SCP), deep cap...
Article
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Background There is no consensus regarding the optimal internal limiting membrane (ILM) peel size during vitrectomy for idiopathic full thickness macular holes (iFTMH). Methods A systematic review was performed to identify randomized controlled trials (RCTs) comparing vitrectomy with ILM peeling of differing sizes in adults with iFTMH. Individual...
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Background To evaluate baseline optical coherence tomography (OCT) biomarkers in treatment-naïve patients with neovascular age-related macular degeneration (nAMD) and their correlation with visual acuity changes following intravitreal aflibercept injections. Methods A retrospective analysis was conducted on treatment-naïve nAMD patients. Baseline...
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To investigate the impact of the COVID-19 pandemic on the incidence and clinical characteristics of rhegmatogenous retinal detachment (RRD) patients referred to a high-volume center, Farabi Eye Hospital, Iran. In a retrospective study, all new RRD patients referred to Farabi Eye Hospital between March 2019 and March 2020 (pre-pandemic, Group 1) and...
Article
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Background: Early detection and accurate staging of diabetic retinopathy (DR) are important to prevent vision loss. Optical coherence tomography angiography (OCTA) images provide detailed insights into the retinal vasculature, revealing intricate changes that occur as DR progresses. However, interpreting these complex images requires significant ex...
Article
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We compared chorioretinal microvascular of Slow Coronary Flow Phenomenon (SCFP) patients using Optical Coherence Tomography Angiography (OCTA) to healthy controls. We recruited 21 patients from September 2023 until January 2024 from two referral centers. We enrolled 21 age-sex-matched controls retrospectively. Patients were referred to obtain OCTA...
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Background This retrospective study aimed to compare optic disc vasculature changes in 1 and 3 months after treatment with either panretinal photocoagulation (PRP) or Intravitreal bevacizumab (IVB) in patients with diabetic retinopathy. Methods A total of 50 eyes of 29 diabetic patients without severe complications were included in this comparativ...
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In this randomized controlled trial, we assessed the effects of three consecutive intra-silicone oil (SO) injections of methotrexate (MTX) on the outcomes of surgery for proliferative vitreoretinopathy grade C (PVR-C). Seventy-four eyes of 74 patients with PVR-C were included. Of these, 37 eyes were assigned to the MTX group and 37 eyes to the cont...
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Background This study aimed to evaluate the effectiveness of DeepLabv3+with Squeeze-and-Excitation (DeepLabv3+SE) architectures for segmenting the choroid in optical coherence tomography (OCT) images of patients with diabetic retinopathy. Methods A total of 300 B-scans were selected from 21 patients with mild to moderate diabetic retinopathy. Six...
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This retrospective study aimed to assess different macular neovascular network characteristics in relation to changes in best corrected visual acuity (BCVA) over 3 and 12 months following treatment. Using optical coherence tomography angiography, we reviewed the medical records of 46 treatment-naïve patients with neovascular age-related macular deg...
Article
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Purpose: This study aimed to compare macular vascular changes one and three months after treatment with either panretinal photocoagulation (PRP) or intravitreal bevacizumab (IVB). Methods: A total of 62 eyes with very severe non-proliferative diabetic retinopathy or early proliferative diabetic retinopathy without center-involved diabetic macular e...
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Purpose: To assess subfoveal choroidal thickness (SFCT) and choroidal vascularity index (CVI) profile in the Iranian healthy population and assessment of the inter‑eye difference in this regard. Methods: In a cross‑sectional study, 141 healthy subjects underwent an assessment of refraction and best‑corrected visual acuity (BCVA), axial length (AL)...
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This study aimed to investigate the effect of orbital wall decompression surgery and reduction of proptosis on the choroidal vascularity index (CVI) and subfoveal choroidal thickness (SFCT) in patients with thyroid eye disease (TED). Fifty-one eyes from 38 patients with controlled TED and proptosis were enrolled in this study. The majority of the p...
Preprint
Full-text available
The study aimed to assess different choroidal neovascular network characteristics in relation to changes in best corrected visual acuity (BCVA) over 3 and 12 months following treatment. Using optical coherence tomography angiography, the choroidal neovascular complexes of 46 treatment naïve patients with neovascular age-related macular degeneration...
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An 8-year-old male patient was presented with a chief complaint of visual perception of a spherical object located in the visual field of his right eye. According to the patient’s prior medical records, they exhibited a sole incident of minor visual impairment in the right eye, characterized by blurred vision (best-corrected visual acuity: 8/10), w...
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Background The aim of this study was to evaluate the ability of two novel eyelid curvature measurements to distinguish between normal eyes and different severities of blepharoptosis. Methods A comparative cross-sectional analysis of upper eyelid curvature was performed for different severities of patients with unilateral blepharoptosis (congenital...
Article
Cite this article: Abdi P; Riazi H; Ghochani G; Aminizade M. Argon laser photocoagulation for the treatment of challenging iris cysts: A case series. J Clin Med Images Case Rep. 2024; 4(1): 1661. Abstract Purpose: This study aims to highlight three cases of challenging and recurrent iris cysts and emphasize argon laser as a potential therapeutic so...
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Purpose To report the result of strabismus surgery in eye-salvaged retinoblastoma (Rb) patients. Methods A retrospective case series including 18 patients with Rb and strabismus who underwent strabismus surgery after completing tumor treatment by a single pediatric ophthalmologist. Results A total of 18 patients (10 females and 8 males) were incl...
Article
Background To describe different clinical presentations of a same NR2E3 recessive mutation in two families and within one family. Design Interventional family study. Results Our first case was a one-year-old male child with high hyperopia and refractive accommodative esotropia. In retinal examination, peri-papillary sub-retinal fibrosis with a he...
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Background To assess the characteristics and outcomes of uveal melanoma management at a tertiary center in the Middle East. Methods A study on 164 patients with uveal melanoma was conducted by reviewing the available medical records, ultrasound, and pathology report results. Age at diagnosis, tumor location and size, treatment mode, visual outcome...
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Diabetes retinopathy prevention necessitates early detection, monitoring, and treatment. Non-invasive optical coherence tomography (OCT) shows structural changes in the retinal layer. OCT image evaluation necessitates retinal layer segmentation. The ability of our automated retinal layer segmentation to distinguish between normal, non-proliferative...
Article
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Background Considering the various manifestations of coronavirus disease 2019 and its imperative importance in terms of the right clinical approach and early management, we sought to present a hemicentral retinal vein occlusion case, with a history of heterozygosity of methylenetetrahydrofolate reductase (MTHFR) genes and potential for clotting com...
Article
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Background The aim of this report is to highlight the importance of considering nephrotic syndrome as a potential underlying cause of bilateral central serous retinal detachment in a patient with systemic lupus erythematosus and to underscore the significance of a comprehensive systemic workup in these patients. Case presentation A 19-year-old Ira...
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Background This study aimed to review the literature on the application of ImageJ in optical coherence tomography angiography (OCT-A) images. Methods A general search was performed in PubMed, Google Scholar, and Scopus databases. The authors evaluated each of the selected articles in order to assess the implementation of ImageJ in OCT-A images. R...
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To compare the choroidal neovascular features of individuals with pachychoroid neovasculopathy (PNV) and neovascular age-related macular degeneration (nAMD) with and without shallow irregular pigment epithelial detachment (SIPED). Using optical coherence tomography angiography, the choroidal neovascular complexes of 27 patients with PNV, 34 patient...
Article
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Purpose To introduce a new supporting marker for discriminating different grades of ptosis called Sector Area Index (SAI) and a semi-automated technique to calculate it. Methods In this cross-sectional comparative case series, a circle enclosing the intercanthal distance was automatically drawn after choosing two points as the medial and lateral c...
Article
Full-text available
A girl of 8 years old was referred to our clinic with a history of penetrating injury to her left eye 6 years ago with light perception vision and a large traumatic macular hole in her right eye. Her right eye's vision was 4/10 when she first visited our clinic. Considering the patient's one-eye status, her parents' reluctance to undergo surgery, a...
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Background. This study is aimed at exploring a case of choroidal Langerhans cell histiocytosis (LCH) successfully treated with systemic corticosteroid and immunosuppressant. Case presentation. A 24-year-old man with known multisystem LCH developed loss of vision, ocular pain, conjunctival injection, panuveitis, and a ciliochoroidal mass. After rece...
Article
bstract Background Central serous chorioretinopathy (CSC) is characterized by focal serous detachment of the retina, primarily affecting the macula. Photodynamic therapy (PDT) is the best choice for treatment of chronic and recurrent patients. In this study we aim to evaluate the early effects of the half dose protocol (3 mg/m2 verteporfine) of PDT...
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Purpose To report a case with branch retinal vein occlusion secondary to a retinal astrocytic hamartoma in a patient with tuberous sclerosis complex. Observations A fourteen-year-old boy, a known case of tuberous sclerosis complex, with multiple bilateral retinal astrocytic hamartomas was followed by 6 months intervals. In his last follow-up, 6 mo...
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Background The purpose of this study is to describe a patient who experienced simultaneous central retinal vein and cilioretinal artery occlusions, as well as perifoveal hemorrhage in the Henle fiber. Case presentation A 67-year-old Iranian woman presented with a 3-day history of reduced vision in her left eye. Venous tortuosity and retinal hemorr...
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Purpose: To investigate the choroidal structure in keratoconic patients with different severity using the choroidal vascularity index (CVI) derived from image binarization on enhanced depth imaging optical coherence tomography scans (EDI‑OCT). Methods: Sixty‑eight eyes from 34 keratoconus (KCN) patients and 72 eyes from 36 healthy subjects were re...
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We report the choroidal and ciliary body invasion by retinoblastoma (RB) in a salvaged eye after complete and successful primary treatment. Case 1: A 25-month-old boy was referred due to group B RB lesions based on the International Classification of RB (ICRB; groups A-E) in the right eye (OD). His left eye (OS) was enucleated because of advanced g...
Preprint
Full-text available
Purpose: To describe spectral-domain optical coherence tomography (SD-OCT) morphological characteristics in patients with cone dystrophy. Methods: Forty-two patients (84 eyes) with the diagnosis of cone dystrophy based on clinical findings and electroretinogram reports (severely reduced or non-recordable cone response with preserved rod function) w...
Conference Paper
Purpose : Standard electroretinography (ERG) protocol recommended by the International Society for Clinical Electrophysiology of Vision (ISCEV) is not fully applicable in children due to the time-consuming process, child‘s poor cooperation, and the potential side effects of general anesthetics. Modified fast and comfortable protocols are required i...
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Purpose: To investigate the macular microvascular changes after different kinds of chemotherapy in patients with extramacular retinoblastoma (RB). Methods: In this study, 28 eyes of 19 patients with bilateral RB treated with intravenous systemic chemotherapy (IVSC group) and 12 eyes of 12 patients with unilateral RB treated with intra‑arterial che...
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Purpose: To evaluate the epidemiologic pattern of intravitreal injections (IVIs) during Coronavirus Disease 2019 (COVID‑19) pandemic. Methods: The records of patients receiving IVIs in two 12‑month periods immediately before and after the beginning of the COVID‑19 epidemic were included. Age, province of residency, indication, number of injections,...
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Purpose: To evaluate the effect of fluorescein dye usage on renal function in patients with diabetic retinopathy (DR) and chronic kidney disease (CKD). Methods: Diabetic patients with retinopathy who were candidate for fundus fluorescein angiography (FA) were evaluated for serum creatinine and urea levels within five days prior to performing the...
Article
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This cross-sectional study was designed to assess alterations of choroidal and retinal microvasculature in patients with Heart Failure with Reduced Ejection Fraction (HFrEF) and compare them with a normal age and sex-matched population. Fifty-two eyes of 26 patients with HFrEF (left ventricular ejection fraction [LVEF] < 40%) and 64 eyes of 32 heal...
Article
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This paper aims to present an artificial intelligence-based algorithm for the automated segmentation of Choroidal Neovascularization (CNV) areas and to identify the presence or absence of CNV activity criteria (branching, peripheral arcade, dark halo, shape, loop and anastomoses) in OCTA images. Methods: This retrospective and cross-sectional study...
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Background To report the first case of bull’s eye maculopathy associated with veterinary niclosamide. Case presentation A 27-year-old Iranian female presented with a history of reduced vision and photopsia since 3 years, after accidental ingestion of four boluses of veterinary niclosamide. Fundus examination showed atrophy in parafoveal retinal pi...
Article
Full-text available
The retina encompasses several cone and rod photoreceptors at fovea region i.e., 90 million cells of rod photoreceptors and 4.5million cells of cone photoreceptors. The overall photoreceptors determine the vision of every human. An electromagnetic dielectric resonator antenna has been presented for retina photoreceptors in order to model them at fo...
Article
Full-text available
The choroidal vascularity index (CVI) is a new biomarker defined for retinal optical coherence tomography (OCT) images for measuring and evaluating the choroidal vascular structure. The CVI is the ratio of the choroidal luminal area (LA) to the total choroidal area (TCA). The automatic calculation of this index is important for ophthalmologists but...
Article
Full-text available
To our knowledge, this is the first report to describe bacillary layer detachment (BLD) in a patient with diabetic retinopathy treated with anti-vascular endothelial growth factor. We present the case of a 55-year-old diabetic female who was referred to our hospital complaining of decreased vision in her left eye for 2 weeks. Fundus examination of...
Article
Full-text available
Quantifying the smoothness of different layers of the retina can potentially be an important and practical biomarker in various pathologic conditions like diabetic retinopathy. The purpose of this study is to develop an automated machine learning algorithm which uses support vector regression method with wavelet kernel and automatically segments tw...
Chapter
This chapter of the book beautifully illustrates mulltimodal imaging of a variety of intraocular tumors with a greater focus on enhanced-depth imaging (EDI). The choroidal nevus as one of the most common ocular tumors has been represented at the beginning of this section, which is then followed by choroidal melanoma. Although a nevus and melanoma h...
Data
In this study, we used a dataset of 3173 OCT images from healthy and abnormal subjects Images acquired using different OCT devices. We divided these images into six subsets as described in Table I. Subset I consisted of 1568 images from healthy subjects and patients with multiple sclerosis (MS) obtained by the Heidelberg OCT platform (Heidelberg En...
Data
In this study, we used a dataset of 3173 OCT images from healthy and abnormal subjects Images acquired using different OCT devices. We divided these images into six subsets as described in Table I. Subset I consisted of 1568 images from healthy subjects and patients with multiple sclerosis (MS) obtained by the Heidelberg OCT platform (Heidelberg En...
Preprint
Full-text available
This cross-sectional study designed to assess alterations of choroidal and retinal microvasculature in patients with Heart Failure with Reduced Ejection Fraction (HFrEF) and compare them with a normal age-matched population. Fifty-two eyes of 26 patients with HFrEF (left ventricular ejection fraction [LVEF] < 40%) and 64 eyes of 32 healthy individu...
Article
Full-text available
Background We report an otherwise healthy adult with macular telangiectasia with aneurysms, ischemia, and obliterated capillaries in both eyes. Methods This is a case report with a brief literature review. Case presentation A 58-year-old Iranian woman presented with a gradual decrease in vision, with recent deterioration. Past medical history was...
Article
Full-text available
Background: To evaluate the additive effect of topical or sub-tenon injection of interferon (IFN)-α 2b in the treatment of refractory diabetic macular edema. Methods: In this prospective study patients with center-involved DME who were unresponsive to 3 monthly consecutive IVB injections were recruited. Patients were divided into three groups: g...
Preprint
Full-text available
Introduction: To evaluate and compare macular vasculature changes in 1 and 3-months after initiating treatment with either panretinal photocoagulation (PRP) or Intravitreal bevacizumab (IVB) injection. Methods: A total of 62 eyes from 33 diabetic patients without macular edema were included in this prospective case series. Of these, thirty-nine eye...
Article
Full-text available
Purpose To compare the visual, refractive, and anatomical outcomes and incidence of complications between combined pars plana vitrectomy and phacoemulsification (phacovitrectomy) versus pars plana vitrectomy (PPV-only) in phakic eyes with rhegmatogenous retinal detachment (RRD). Methods Two independent reviewers searched MEDLINE, Cochrane Central,...
Article
Full-text available
To evaluate the relationship between non-cystic thickening of the macula on optical coherence tomography (OCT) and retinal vascular leakage on fluorescein angiogram (FA) in patients with uveitis. A cross-sectional study of patients seen in the uveitis clinic. Patients with any degree of inflammatory cells in the anterior vitreous were included, pro...
Preprint
Full-text available
The purpose of current study was to introduce a new marker for discriminating different grades of ptosis called Sector Area Index (SAI) and a semi-automated technique to calculate it. In this cross-sectional comparative case series, after choosing two points as the medial and lateral canthus and manually selecting the palpebral fissure region, a ci...
Article
Full-text available
Purpose This study aimed to evaluate the rate and risk factors for primary failure and recurrence after intravitreal anti-VEGF injection in retinopathy of prematurity (ROP). Methods This retrospective study was performed on 865 eyes from 441 patients with retinopathy of prematurity receiving intravitreal bevacizumab from 2012 to 2019. Medical reco...
Article
Full-text available
Retinal optical coherence tomography (OCT) images are widely used in diagnosis of ocular conditions. However, random shift and orientation changes of the retinal layers in OCT B-scans yield to appearance variations across the scans. These variations reduce the accuracy of the algorithms applied in the analysis of OCT images. In this study, we propo...
Article
Full-text available
To present long-term visual and structural outcome of treatment in two forms of flat irregular pigment epithelial detachment (FIPED): avascular (aFIPED) and vascularized (vFIPED) in eyes within pachychoroid spectrum. Prospective interventional case series. FIPED were classified into two subgroups; aFIPED and vFIPED based on OCTA. aFIPED underwent P...
Conference Paper
Purpose : To describe spectral-domain optical coherence tomography (SD-OCT) morphological features of patients with cone dystrophy and to determine the relationship between these findings and visual acuity. Methods : Forty-two patients (84 eyes) with the diagnosis of cone dystrophy based on clinical findings and electroretinogram (severely reduced...