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  1. Article ; Online: A new computer-aided diagnosis tool based on deep learning methods for automatic detection of retinal disorders from OCT images.

    Alizadeh Eghtedar, Reza / Vard, Alireza / Malekahmadi, Mohammad / Peyman, Alireza

    International ophthalmology

    2024  Volume 44, Issue 1, Page(s) 110

    Abstract: Purpose: Early detection of retinal disorders using optical coherence tomography (OCT) images can prevent vision loss. Since manual screening can be time-consuming, tedious, and fallible, we present a reliable computer-aided diagnosis (CAD) software ... ...

    Abstract Purpose: Early detection of retinal disorders using optical coherence tomography (OCT) images can prevent vision loss. Since manual screening can be time-consuming, tedious, and fallible, we present a reliable computer-aided diagnosis (CAD) software based on deep learning. Also, we made efforts to increase the interpretability of the deep learning methods, overcome their vague and black box nature, and also understand their behavior in the diagnosis.
    Methods: We propose a novel method to improve the interpretability of the used deep neural network by embedding the rich semantic information of abnormal areas based on the ophthalmologists' interpretations and medical descriptions in the OCT images. Finally, we trained the classification network on a small subset of the online publicly available University of California San Diego (UCSD) dataset with an overall of 29,800 OCT images.
    Results: The experimental results on the 1000 test OCT images show that the proposed method achieves the overall precision, accuracy, sensitivity, and f1-score of 97.6%, 97.6%, 97.6%, and 97.59%, respectively. Also, the heat map images provide a clear region of interest which indicates that the interpretability of the proposed method is increased dramatically.
    Conclusion: The proposed software can help ophthalmologists in providing a second opinion to make a decision, and primitive automated diagnoses of retinal diseases and even it can be used as a screening tool, in eye clinics. Also, the improvement of the interpretability of the proposed method causes to increase in the model generalization, and therefore, it will work properly on a wide range of other OCT datasets.
    MeSH term(s) Humans ; Tomography, Optical Coherence/methods ; Deep Learning ; Retinal Diseases/diagnosis ; Diagnosis, Computer-Assisted/methods ; Computers
    Language English
    Publishing date 2024-02-23
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 800087-6
    ISSN 1573-2630 ; 0165-5701
    ISSN (online) 1573-2630
    ISSN 0165-5701
    DOI 10.1007/s10792-024-03033-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Hemoglobin A

    Izadpanah, Peyman / Dehghanzadeh, Tara / Attar, Armin / Hosseinpour, Alireza / Rahimikashkooli, Nima

    Future cardiology

    2024  

    Abstract: Background: ...

    Abstract Background:
    Language English
    Publishing date 2024-04-11
    Publishing country England
    Document type Journal Article
    ZDB-ID 2274267-0
    ISSN 1744-8298 ; 1479-6678
    ISSN (online) 1744-8298
    ISSN 1479-6678
    DOI 10.2217/fca-2023-0121
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: An elliptical nanoantenna array plasmonic metasurface for efficient solar energy harvesting.

    Ashrafi-Peyman, Zahra / Jafargholi, Amir / Moshfegh, Alireza Z

    Nanoscale

    2024  Volume 16, Issue 7, Page(s) 3591–3605

    Abstract: Plasmonic metasurfaces with subwavelength nanoantenna arrays have attracted much attention for their ability to control and manage optical properties. Solar absorbers are potential candidates for effectively converting photons into heat and electricity. ... ...

    Abstract Plasmonic metasurfaces with subwavelength nanoantenna arrays have attracted much attention for their ability to control and manage optical properties. Solar absorbers are potential candidates for effectively converting photons into heat and electricity. This study introduces a novel ultrathin metasurface solar absorber employing elliptical-shaped nanoantenna arrays. We theoretically and numerically demonstrate a near-perfect broadband absorber with over 90% absorption efficiency in a wide range of wavelengths of 300-2500 nm, using finite element (FEM) and finite-difference time-domain (FDTD) methods. The proposed nanostructure configuration enhances light absorption by exciting localized surface plasmon resonances (LSPRs) between elliptical-shaped nanoantenna gaps at many wavelengths, maintaining stability at wide incident angles and insensitivity to light polarization. Compared to other state-of-the-art absorbers with a thickness of less than 300 nm, the designed nanostructure with 260 nm thickness achieves over 90% optical absorption across a broad range of wavelengths of 300-1116 nm in air (or vacuum) environments and performs effectively under water conditions for solar energy harvesting in a range of wavelengths of 300-1436 nm, and therefore can serve as a solar evaporator. Combining refractory plasmonic titanium nitride (TiN) and semiconductor gallium nitride (GaN) nanostructures holds great potential for efficient optoelectronic and photocatalytic applications, especially in harsh and high-temperature environments like thermophotovoltaic systems. The TiN-based metasurface absorber, with its ultrathin nanostructure and suitable spectral absorption in ultraviolet-visible-infrared spectra, offers scalability and cost-effectiveness. The findings in this work will deepen our understanding of LSPRs and pave a novel path for efficient solar energy conversion.
    Language English
    Publishing date 2024-02-15
    Publishing country England
    Document type Journal Article
    ZDB-ID 2515664-0
    ISSN 2040-3372 ; 2040-3364
    ISSN (online) 2040-3372
    ISSN 2040-3364
    DOI 10.1039/d3nr05657k
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Characteristics of Hospitalized Pediatric Patients Following Traumatic Open Globe Injuries; a Cross-sectional Study.

    Peyman, Alireza / Dehghani, Alireza / Hoghooghi, Alireza / Sheykhi, Kazhaal / Khoshhali, Mehri / Abounoori, Mahdi / Khosrropour, Hajar / Pourazizi, Mohsen

    Archives of academic emergency medicine

    2024  Volume 12, Issue 1, Page(s) e28

    Abstract: Introduction: One of the main causes of acquired blindness and impairment in children is ocular trauma. This study aimed to evaluate the epidemiological and clinical characteristics of pediatric patients hospitalized with open globe injuries (OGI).: ... ...

    Abstract Introduction: One of the main causes of acquired blindness and impairment in children is ocular trauma. This study aimed to evaluate the epidemiological and clinical characteristics of pediatric patients hospitalized with open globe injuries (OGI).
    Methods: A retrospective cross-sectional study was conducted on children diagnosed with OGI at a referral Hospital affiliated with Isfahan University of Medical Sciences, Isfahan, Iran, from 2014 to 2018.
    Results: 375 OGI medical records were detected during the study period. The common culprits for OGI in boys were knives (21.3%), wood (19.7%), metal bodies (12.2%), and glass (11.8%). In girls, the common causes were knives (28.7%), glass (24.3%), pencils (11.3%), and wood (10.4%). Boys had a greater rate of Intraocular foreign body (IOFB) (p= 0.052) but had lower odds of blindness compared to girls (OR=0.48; 95% CI: (0.24, 0.98); p = 0.04). Patients with corneal lacerations had lower chances of long-term admission than those with corneal and scleral lacerations (OR= 0.35, 95% CI: (0.17, 0.69); p = 0.02).
    Conclusion: Most pediatric OGIs occur in boys. knives were the principal culprit for OGI, followed by glass and wood. Boys had a greater IOFB rate but lower blindness odds than girls.
    Language English
    Publishing date 2024-02-17
    Publishing country Iran
    Document type Journal Article
    ISSN 2645-4904
    ISSN (online) 2645-4904
    DOI 10.22037/aaem.v12i1.2175
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Corneal Perforation as a Rare Ocular Manifestation in Lamellar Ichthyosis: Case Report and Literature Review.

    Peyman, Alireza / Pourazizi, Mohsen / Dehghani, Shakiba / Abtahi-Naeini, Bahareh

    Indian dermatology online journal

    2023  Volume 14, Issue 6, Page(s) 901–903

    Language English
    Publishing date 2023-10-13
    Publishing country India
    Document type Journal Article
    ZDB-ID 2585814-2
    ISSN 2249-5673 ; 2229-5178
    ISSN (online) 2249-5673
    ISSN 2229-5178
    DOI 10.4103/idoj.idoj_679_22
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Recurring nodular scleritis following inactivated vaccination for COVID-19.

    Peyman, Alireza / Pourazizi, Mohsen / Dehghani, Shakiba / Ghorbani, Sarah

    Clinical case reports

    2023  Volume 11, Issue 6, Page(s) e7420

    Abstract: Key clinical message: Though COVID-19 vaccination saved many lives all around the world, it has had many adverse effects including ophthalmologic side effects. It is important to report such adverse effects to provide timely diagnosis and management.: ...

    Abstract Key clinical message: Though COVID-19 vaccination saved many lives all around the world, it has had many adverse effects including ophthalmologic side effects. It is important to report such adverse effects to provide timely diagnosis and management.
    Abstract: Since the COVID-19 global outbreak, many types of vaccines have been introduced. These vaccines have been associated with some adverse effects including ocular manifestations. Herein, we report a case of a patient who developed nodular scleritis shortly after receiving the first and second doses of the inactivated COVID-19 vaccine, Sinopharm.
    Language English
    Publishing date 2023-06-13
    Publishing country England
    Document type Case Reports
    ZDB-ID 2740234-4
    ISSN 2050-0904
    ISSN 2050-0904
    DOI 10.1002/ccr3.7420
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Evaluation of Ganglion Cell-Layer Complex and Macular Vessel Density in Amblyopic Eyes with Optical Coherence Tomography Angiography.

    Naderi Beni, Afsaneh / Dehghani, Alireza / Peyman, Mohammadreza / Baghshahi, Sajjad / Sattari, Niloofar / Hoseinzadeh, Safoura

    Photobiomodulation, photomedicine, and laser surgery

    2024  Volume 42, Issue 1, Page(s) 66–80

    Abstract: Purpose: ...

    Abstract Purpose:
    MeSH term(s) Humans ; Aged ; Child ; Adolescent ; Young Adult ; Adult ; Middle Aged ; Tomography, Optical Coherence ; Cross-Sectional Studies ; Angiography
    Language English
    Publishing date 2024-01-02
    Publishing country United States
    Document type Journal Article
    ISSN 2578-5478
    ISSN (online) 2578-5478
    DOI 10.1089/photob.2023.0053
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Laser Vision Correction after Radial Keratotomy: A Systematic Review and Meta-analysis.

    Koosha, Nima / Riazi, Mir-Siamak / Janfaza, Parisa / Mohammadbeigy, Iman / Rahimi, Alireza / Khoshali, Mehri / Pourazizi, Mohsen / Peyman, Alireza

    Journal of cataract and refractive surgery

    2024  

    Abstract: Laser vision correction for residual refractive errors in patients with previous radial keratotomy (RK) presents a challenging task. Different techniques have been used with varying outcomes. This study aimed to systematically review published ... ...

    Abstract Laser vision correction for residual refractive errors in patients with previous radial keratotomy (RK) presents a challenging task. Different techniques have been used with varying outcomes. This study aimed to systematically review published manuscripts on refractive surgeries in post-RK patients search in PubMed, Scopus, and Web of Science. The final analysis included 35 studies that described a total of 888 eyes. Our systematic review and meta-analysis demonstrated a significant improvement in uncorrected distance visual acuity (UDVA) for photorefractive keratectomy, topography-guided-PRK, wavefront-guided-PRK, and femtosecond- laser-assisted in situ keratomileusis (LASIK), while mechanical microkeratome LASIK did not yield such significant improvements. Moreover, our results suggest that hyperopic post-RK patients had a significant improvement in UDVA, whereas no such improvement was observed in myopic patients.
    Language English
    Publishing date 2024-02-14
    Publishing country United States
    Document type Journal Article
    ZDB-ID 632744-8
    ISSN 1873-4502 ; 0886-3350
    ISSN (online) 1873-4502
    ISSN 0886-3350
    DOI 10.1097/j.jcrs.0000000000001426
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: Corneal Cross-linking at the Slit Lamp: Concern About Risk of Corneal Ulcer.

    Peyman, Alireza / Pourazizi, Mohsen

    Journal of refractive surgery (Thorofare, N.J. : 1995)

    2021  Volume 37, Issue 8, Page(s) 572

    MeSH term(s) Cornea ; Corneal Ulcer/diagnosis ; Corneal Ulcer/drug therapy ; Cross-Linking Reagents/adverse effects ; Humans ; Slit Lamp ; Slit Lamp Microscopy
    Chemical Substances Cross-Linking Reagents
    Language English
    Publishing date 2021-08-01
    Publishing country United States
    Document type Letter
    ISSN 1081-597X
    ISSN 1081-597X
    DOI 10.3928/1081597X-20210615-01
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Recurring nodular scleritis following inactivated vaccination for COVID‐19

    Alireza Peyman / Mohsen Pourazizi / Shakiba Dehghani / Sarah Ghorbani

    Clinical Case Reports, Vol 11, Iss 6, Pp n/a-n/a (2023)

    2023  

    Abstract: Key Clinical Message Though COVID‐19 vaccination saved many lives all around the world, it has had many adverse effects including ophthalmologic side effects. It is important to report such adverse effects to provide timely diagnosis and management. ... ...

    Abstract Key Clinical Message Though COVID‐19 vaccination saved many lives all around the world, it has had many adverse effects including ophthalmologic side effects. It is important to report such adverse effects to provide timely diagnosis and management. Abstract Since the COVID‐19 global outbreak, many types of vaccines have been introduced. These vaccines have been associated with some adverse effects including ocular manifestations. Herein, we report a case of a patient who developed nodular scleritis shortly after receiving the first and second doses of the inactivated COVID‐19 vaccine, Sinopharm.
    Keywords coronavirus disease‐2019 ; COVID‐19 vaccine ; scleritis ; Sinopharm ; Medicine ; R ; Medicine (General) ; R5-920
    Language English
    Publishing date 2023-06-01T00:00:00Z
    Publisher Wiley
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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