Usman Imtiaz

ORCID: 0000-0002-8311-4059
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About
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Research Areas
  • Intraocular Surgery and Lenses
  • Retinal and Macular Surgery
  • Ocular Diseases and Behçet’s Syndrome
  • Retinal Diseases and Treatments
  • Retinal and Optic Conditions
  • Glaucoma and retinal disorders
  • Retinal Imaging and Analysis
  • Ocular Oncology and Treatments
  • Traumatic Ocular and Foreign Body Injuries
  • Ocular Infections and Treatments
  • Hemophilia Treatment and Research
  • Nigella sativa pharmacological applications
  • IgG4-Related and Inflammatory Diseases
  • Nutrition, Genetics, and Disease
  • Facial Trauma and Fracture Management
  • Nonmelanoma Skin Cancer Studies
  • Cerebral Venous Sinus Thrombosis
  • Synthesis and biological activity
  • Abdominal vascular conditions and treatments
  • Synthesis and Characterization of Heterocyclic Compounds
  • Chronic Myeloid Leukemia Treatments
  • Pancreatitis Pathology and Treatment
  • Computational Drug Discovery Methods
  • Ergonomics and Musculoskeletal Disorders
  • Protein Hydrolysis and Bioactive Peptides

Shaikh Zayed Postgraduate Medical Institute
2022

Lahore General Hospital
2018-2020

University of Agriculture Faisalabad
2019

Nutraceuticals is a broad term derived from nutrition and pharmaceutical.Nutraceuticals are used as part of food for preventing treating many acute chronic diseases.Nutraceuticals divided into three main categories including herbs, nutrients dietary supplements.The products which nutraceuticals fibers, prebiotics, probiotics, polyunsaturated fatty acids, antioxidants, spices some other types herbs natural foods.Probiotics ingested their positive advantages in the digestive tract or systemic...

10.36348/sijb.2019.v02i10.001 article EN Scholars International Journal of Biochemistry 2019-10-31

To compare the safety and efficacy of topical anesthesia versus peribulbar for 23-gauge pars plana vitrectomy.Randomized controlled trial.Ophthalmology Department, Lahore General Hospital, Ameer-ud-Din Medical College, Postgraduate Institute, from April 2013 to March 2016.A total 110 patients were equally divided (n=55) in group A (topical anesthesia) B (peribulbar anesthesia). In A, pledget soaked with 0.5% proparacaine hydrochloride placed superior inferior fornices three minutes before...

10.29271/jcpsp.2018.06.452 article EN Journal of College of Physicians And Surgeons Pakistan 2018-05-28

This study determined the outcomes of selective intraarterial chemotherapy (IAC) for treatment Retinoblastoma in Pakistan. Single centre, prospective, interventional case series three consecutive eyes were diagnosed as unilateral Retinoblastoma. Patients underwent IAC with Melphalan (0.5mg/kg) at Lahore General Hospital from July 2017 to January 2018. Selective ophthalmic arterial infusion was carried out all 3 cases. evaluated on 1st, 3rd and 10th postoperative day then 4 weeks interval,...

10.5455/jpma.15646 article EN cc-by Journal of the Pakistan Medical Association 2019-01-01

To determine the efficacy of intravitreal injection melphalan for vitreous seedings resistant to systemic chemotherapy. Prospective non comparative study investigates 105 consecutive eyes retinoblastoma patients in a tertiary care hospital. Patients with persistent or recurrent seeds were included study. Injection was prepared under aseptic conditions. given at 2–4 mm away from limbus using 27gauge needle. Cryotherapy applied site before and during removal Eye copiously irrigated soon after...

10.1016/j.phoj.2020.10.002 article EN cc-by-nc-nd Pediatric Hematology Oncology Journal 2020-10-15

Purpose: To evaluate the eye-drop administration technique and see effect of education in improving eye drop delivery method. Study Design: Interventional case series. Place Duration Study: Central Park Teaching Hospital Lahore from May-2022 to September-2022 Methods: This study includes 341 patients who had been self-administering drops as a treatment for glaucomaor any other disorder. The were asked instill by using 5ml Systane bottle, they should do at home. Two observers assessed...

10.36351/pjo.v40i2.1734 article EN cc-by-nc Pakistan Journal of Ophthalmology 2024-04-01

Comparison of a customized disposable kit with conventional stainless steel instrument was performed for an intravitreal injection. A total 2700 eyes 2250 patients were enrolled in two groups. Comfort level the assessed using 'Pain Scale' and any post injection complications examined clinically by slit lamp biomicroscopy. Surgeon's ease questionnaire. In group A, no pain recorded 1231(82.06%) eyes, mild d escribed 184(12.27%), moderate documented 78 (5.2%) while, severe noticed 7(0.47%). B,...

10.5455/jpma.11480 article EN cc-by Journal of the Pakistan Medical Association 2020-01-01

Purpose: To compare the frequency of post-operative hypotony between 23G PPV and 25G in advanced diabetic eye disease.
 Study Design: Quasi experimental study.
 Place Duration Study: was conducted at department Ophthalmology, Lahore General Hospital, from 7th April 2016 to 6th October 2016.
 Methods: Total 100 cases disease with age ranging 25 – 65 years either gender were selected. Patients nystagmus claustrophobia, lamellar macular holes, epiretinal membrane neovascular...

10.36351/pjo.v36i4.1016 article EN Pakistan Journal of Ophthalmology 2020-07-24

Vitreous cysts represent a very rare ocular malformation. These can occurin an otherwise healthy eye or in diseased they occur associationwith the remnants of hyaloid system. We report here case 14-year-oldmale presenting to us with complaint painless transient blurring vision lefteye. Visual acuity was 6/6 right and 6/24 left eye, which improved 6/6once goes away. On examination there wasa freely floating cyst vitreous. It translucent, smooth, brownpigmentedsurface. Rest unremarkable. Blood...

10.36351/pjo.v31i4.194 article EN Pakistan Journal of Ophthalmology 2015-12-31

Introduction: The modern ophthalmology trends are changing rapidly every day with the introduction of much newer studies and research. Numerous anti-vascular endothelial growth factors (VEGF) utilized as mainstay in treatment intraocular vascular pathologies. rationale this study is to add literature regarding safety efficacy profile ziv-aflibercept there insubstantial data patients pathologies being treated injection prime focus on complications injection. Materials Methods: A prospective...

10.4236/ojoph.2023.132017 article EN Open Journal of Ophthalmology 2023-01-01

Introduction: Hemophilia A is the most common inherited bleeding disorder in Pakistan. Apart from frequent bleeds and joint deformities, formation of inhibitors major complication hemophilia. Inhibitors are antibodies formed against coagulation factor. The purpose this study to determine incidence inhibitor development hemophilia patient receiving different treatment modalities namely fresh frozen plasma (FFP)/cryoprecipitate, derived FVIII concentrates long-acting recombinant concentrates....

10.47489/szmc.v37i4.403 article EN cc-by Proceedings of Shaikh Zayed Medical Complex Lahore 2023-11-13

Purpose: To find the visual and anatomical outcomes of pars plana vitrectomy in cases refractory diabetic macular edema.
 Study Design: Quasi Experimental study.
 Place Duration Study: Department Ophthalmology, Lahore General Hospital from January 2013 to April 2019.
 Material Methods: Seventy-six patients between age 18 60 years both genders having edema with thickness 400 micrometers or more on OCT were enrolled. Informed consent was taken. Detailed preoperative workup...

10.36351/pjo.v36i1.995 article EN Pakistan Journal of Ophthalmology 2020-02-22

Purpose: To study the safety and efficacy of intravitreal Ziv-Aflibercept vs. Bevacizumab for management edema caused by different retinal pathologies.
 Study Design: Comparative interventional study.
 Place Duration Study: Lahore General Hospital, Lahore, from July 2018 to June 2019.
 Material Methods: Patients with resistant, center involving macular due diabetes, vein occlusion age related degeneration were recruited. Complete ocular examination was performed. All patients...

10.36351/pjo.v36i3.1014 article EN cc-by-nc Pakistan Journal of Ophthalmology 2020-05-04

Purpose: To find out the anatomic and functional outcomes of pars plana vitrectomy (PPV) internal limiting membrane (ILM) peeling in patients with refractory macular edema associated branch retinal vein occlusion (BRVO).
 Study Design: Interventional case series.
 Place Duration Study: Ophthalmology department at Lahore General Hospital, from 2015 to 2019.
 Methods: Fifty-five eyes presenting (BRVO) were recruited for this study. They treated using 23-gauge Brilliant Blue...

10.36351/pjo.v37i1.1144 article EN cc-by-nc Pakistan Journal of Ophthalmology 2020-11-30

OBJECTIVES: To compare the Surgeon's ease level and duration of surgery in topical anesthesia with peribulbar for vitrectomy without sedation patients unresolving vitreous hemorrhage greater than 3 months. METHODOLOGY: A randomized controlled trial was carried out at Department Ophthalmology, Lahore General Hospital, Postgraduate Medical Institute, from October 2017 to September 2018. total 110 were equally divided (n=55) group (topical anesthesia) B (peribulbar by lottery method. In A, 0.5%...

10.37762/jgmds.9-2.210 article EN cc-by-nc-sa Journal of Gandhara Medical and Dental Science 2022-04-06

Background: Phacoemulsification and removal of silicone oil (ROSO) is a combined, frequently done procedure in retina theatre. A common problem this the post inflammation that affects recovery patients. Thus to counter post-operative inflammation, study has used Enoxaparin Sodium (an anti-inflammatory enoxaparin) phacoemulsification ROSO.
 Patients methods: Prospective interventional at Ophthalmology Department, Lahore General Hospital, included 60 patients which were operated observed...

10.37018/xmpi6453 article EN cc-by-nc Journal of Fatima Jinnah Medical University 2021-02-24
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