Publications by authors named "Muhammad Halim"

Background: Repository corticotropin injection (RCI) has been suggested to exert immunomodulatory and anti-inflammatory effects in ocular inflammation. The index retrospective study aimed to evaluate the efficacy and tolerability of subcutaneous RCI in patients with active scleritis or uveitis.

Main Body: Medical records of patients who were diagnosed with different types of active scleritis or uveitis and received RCI for more than six months at a tertiary eye center were reviewed.

View Article and Find Full Text PDF

Background: Seagrass meadows are a significant blue carbon sink due to their ability to store large amounts of carbon within sediment. However, the knowledge of global greenhouse gas (GHG) emissions from seagrass meadows is limited, especially from meadows in the tropical region. Therefore, in this study, CO and CH emissions and carbon metabolism were studied at a tropical seagrass meadow under various conditions.

View Article and Find Full Text PDF

Most studies on black flies focus on the taxonomy and ecology of their aquatic stages. Despite posing a public health threat, the adults remain poorly studied in many countries, including Malaysia. The present study represents the first investigation of the distribution of wild-caught black flies from various ecological landscapes and climatic conditions in Malaysia.

View Article and Find Full Text PDF

We wrote the letter in response to the insightful comments made by Dr. Vassallo J regarding our recently published study, “Association of Oral Montelukast with Reduced Odds of Developing Exudative Age-Related Macular Degeneration.” Our study underscored the potential treatment for AMD through managing mast cell activation.

View Article and Find Full Text PDF

Background: The ongoing global crisis of Higher Education (HE) institutions during the post-COVID-19 pandemic period has increased the likelihood of enduring psychological stressors for staff. This study aimed to identify factors associated with job insecurity, burnout, psychological distress and coping amongst staff working at HE institutions globally.

Methods: An anonymous cross-sectional study was conducted in 2023 with staff at HE institutions across 16 countries.

View Article and Find Full Text PDF
Article Synopsis
  • * Data from two clinical trials (HARBOR and READ-3) indicated that higher IL-6 concentrations in aqueous humour were associated with poorer visual outcomes over time.
  • * The findings suggest that elevated IL-6 levels could be a predictor of suboptimal responses to anti-VEGF monotherapy in patients suffering from nAMD or DMO.
View Article and Find Full Text PDF
Article Synopsis
  • The review updates the role of corticosteroids and immunomodulatory therapy (IMT) in treating infectious uveitis, focusing on managing inflammation rather than the infection itself.
  • Corticosteroids are mainly used alongside other treatments for infectious uveitis, especially in cases where inflammation worsens or doesn't resolve after initial treatment.
  • The review highlights a lack of consensus on IMT's effectiveness in infectious uveitis, pointing out its occasional use in persistent cases, while providing options for clinicians managing these complex conditions.
View Article and Find Full Text PDF
Article Synopsis
  • A 37-year-old male diagnosed with birdshot chorioretinopathy (BSCR) presented with symptoms like blurry vision and floaters, prompting a thorough eye examination.
  • The examination revealed significant retinal issues, including vitritis and optic disc edema, alongside global dysfunction in eye response tests.
  • The diagnosis of BSCR was confirmed, highlighting the need for early detection and treatment strategies, emphasizing the relevance of HLA-A29 testing in managing this condition in young adults.
View Article and Find Full Text PDF
Article Synopsis
  • A study was conducted to examine changes over time in patients with non-paraneoplastic autoimmune retinopathy (npAIR) using various diagnostic methods.
  • The research involved a retrospective review of 16 eyes from 8 patients, assessing structural and functional changes through tests like wide-angle fundus photography, optical coherence tomography, and electrophysiological assessments over a median follow-up of 11.5 months.
  • Findings indicated that multimodal testing was effective in detecting both structural and functional decline in patients, with adaptive optics scanning laser ophthalmoscopy showing superior sensitivity in monitoring retinal microstructure changes.
View Article and Find Full Text PDF

Purpose: This study was conducted to evaluate the association of oral montelukast, selective antagonism for cysteinyl leukotriene receptor 1, with reduced odds of exudative age-related macular degeneration (exAMD) development.

Methods: This case-control study was conducted using institutional cohort finder tool, and included 1913 patients with exAMD (ICD: H35.32 and 362.

View Article and Find Full Text PDF

Purpose: Diopsys® NOVA™ is a novel full-field electroretinography (ffERG) device that can make rapid measurements of retinal electrophysiologic function. Diagnosys® Espion 2™ is a clinical gold-standard ERG device. This study aimed to investigate whether light-adapted Diopsys® NOVA™ fixed-luminance flicker ffERG magnitude and implicit time (converted from phase) measurements correlate with light-adapted Diagnosys® Espion 2™ flicker ffERG amplitude and implicit time measurements, respectively.

View Article and Find Full Text PDF

Purpose: To describe the prevalence and characteristics of posterior segment manifestations in patients with HLA-B27-associated uveitis using wide field imaging.

Methods: Medical records of patients diagnosed with HLA-B27-associated uveitis from a tertiary uveitis clinic were reviewed. Posterior segment involvements including but not limited to peripheral vasculitis, optic disc inflammation, and macula edema documented based on medical records and various imaging modalities including wide field fluorescein angiography and optical coherence tomography, were noted.

View Article and Find Full Text PDF

Background: To establish topographic maps and determine fundus distribution patterns of ocular toxoplasmosis (OT) lesions.

Methods: In this retrospective study, patients who presented with OT to ophthalmology clinics from four countries (Argentina, Turkey, UK, USA) were included. Size, shape and location of primary (1°)/recurrent (2°) and active/inactive lesions were converted into a two-dimensional retinal chart by a retinal drawing software.

View Article and Find Full Text PDF

Background: Patient safety is a top priority for many healthcare organisations worldwide. However, most of the initiatives aimed at the measurement and improvement of patient safety culture have been undertaken in developed countries. The purpose of this study was to measure the patient safety culture at a tertiary care hospital in Pakistan using the Hospital Survey on Patient Safety Culture (HSOPSC).

View Article and Find Full Text PDF

Purpose: To report the clinical and anatomical features of an unusual case of acute idiopathic blind spot enlargement syndrome (AIBSES) with retinal vasculitis.

Observations: A 39-year-old patient, who was a known case of chronic headache with nonspecific visual symptoms for nine years, developed scotomas in her right eye. She was initially diagnosed with AIBSES which had been stable, but later worsened with symptoms of subsequent blind spot enlargement and photopsia on the left eye a year later.

View Article and Find Full Text PDF

Purpose: To determine the outcomes of intravenous (IV) tocilizumab (TCZ) in patients with non-infectious uveitis who failed with conventional immunomodulatory and anti-TNFα therapies.

Methods: Records of seven patients with non-infectious uveitis treated with monthly IV TCZ (4-10 mg/kg) or biweekly IV TCZ (8 mg/kg) were reviewed. Outcome measures were changes in visual acuity, anterior chamber cell and flare grade, vitreous haze, central subfield thickness (CST), and fluorescein angiography (FA) score.

View Article and Find Full Text PDF

Purpose: To evaluate the efficacy of infliximab (IFX, 5-10 mg/kg) (Group 1) and tocilizumab (TCZ, 4-8 mg/kg) (Group 2) infusions in non-infectious retinal vasculitis (RV) using Angiographic Scoring for the Uveitis Working Group fluorescein angiography (FA) scoring system.

Methods: Records of 14 patients (24 eyes) in Group 1 and 8 patients (11 eyes) in Group 2 were retrospectively evaluated to assess visual acuity (VA), anterior chamber cell and flare, vitreous haze, central subfield thickness (CST), and FA scoring at baseline and 6 months of follow-up. The measurements were employed to grade in each group.

View Article and Find Full Text PDF

Purpose: To describe the clinical course and management of a patient with bilateral retinal vasculitis associated with cold agglutinin disease (CAD) treated with obinutuzumab and infliximab.

Observations: A 69-year-old Hispanic woman was referred to a tertiary Uveitis Clinic with progressively worsening blurry vision, right eye (OD) worse than left eye (OS). Past ocular history was significant for epiretinal membranes in both eyes (OU).

View Article and Find Full Text PDF

Purpose: To evaluate the correlation between longitudinal changes in aqueous flare measured by laser flare photometer (LFP), best-corrected visual acuity (BCVA), and clinical grade using both Standardization of Uveitis Nomenclature (SUN) and modified SUN (MSUN) scales uveitis patients.

Methods: Patients were classified according to both SUN and MSUN grading scales. LFP measurements were acquired (Kowa FM-700) at each visit.

View Article and Find Full Text PDF

Purpose: To describe the reflectance adaptive optics scanning laser ophthalmoscopy (AOSLO) findings in different stages of Vogt-Koyanagi-Harada (VKH) disease and correlate them to visual gain post treatment. Confocal (cAOSLO) and non-confocal split-detector AOSLO (sdAOSLO) were used to assess longitudinally the status of the photoreceptors in a patient with VKH managed on corticosteroid and immunomodulatory therapy.

Observation: A 32-year-old Japanese American female presented with a 2-week history of blurred vision in both eyes (OU) and worsening headache previously diagnosed as a case of VKH and treated with high dose oral prednisone.

View Article and Find Full Text PDF

Introduction: Diabetic retinopathy (DR) is one of the most frequent microvascular complications of diabetes that can lead to blindness. Laser treatment has been the gold standard treatment for diabetic macular edema (DME) and proliferative diabetic retinopathy (PDR) for many years. Recently, the role of vascular endothelial growth factor (VEGF) has been established in the pathogenesis of DR, and the use of intravitreal anti-VEGF therapy has gained popularity for the management of DR.

View Article and Find Full Text PDF

Background/aims: To use a composite endpoint scoring system in assessing efficacy of two doses of intravenous tocilizumab (TCZ), in eyes with non-infectious uveitis.

Methods: Data from STOP-Uveitis Study (a phase 2 multicentre, randomised, interventional clinical trial), where monthly intravenous infusions of 4 mg/kg (Group 1) or 8 mg/kg (Group 2) TCZ until month 6 (M6) were administered, were used. Efficacy was ascertained by a composite endpoint scoring system consisting of: (1) visual acuity; (2) intraocular inflammation; (3) central retinal thickness; (4) posterior segment inflammation on fluorescein angiographic and (5) steroid taper.

View Article and Find Full Text PDF

Bromination of high-pressure, high-temperature (HPHT) nanodiamond (ND) surfaces has not been explored and can open new avenues for increased chemical reactivity and diamond lattice covalent bond formation. The large bond dissociation energy of the diamond lattice-oxygen bond is a challenge that prevents new bonds from forming, and most researchers simply use oxygen-terminated NDs (alcohols and acids) as reactive species. In this work, we transformed a tertiary-alcohol-rich ND surface to an amine surface with ∼50% surface coverage and was limited by the initial rate of bromination.

View Article and Find Full Text PDF

Purpose: To compare laser flare photometry (LFP) measurements of aqueous flare with Standardization of Uveitis Nomenclature (SUN) and modified SUN grading.

Methods: In this prospective study with multicenter design, uveitis patients were classified according to SUN and modified SUN grading scales. LFP was performed with Kowa FM-700 flaremeter.

View Article and Find Full Text PDF