Publications by authors named "Karthik Kumar"

Background: Migraine has been proposed as a potential contributing factor to ischemic complications involving the retina and optic nerve. Ophthalmic disorders connected with migraine encompass occlusions of the branch and central retinal arteries and veins, alongside anterior and posterior ischemic optic neuropathy. With the advent of optical coherence tomography angiography (OCTA), it is easy to identify these macular subclinical microvascular and structural changes.

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ALL is a biologically heterogeneous disease. Risk and response adapted therapy improved the survival of childhood ALL above 90%. Early response parameters independently predicted the survival and relapse.

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Purpose: The purpose is to analyze the clinical and radiological presentation of meningiomas in an Indian population in a tertiary eye care institute in South India.

Methods: A total of 15 patients with intraorbital and intracranial meningioma presented to our neuro-ophthalmology clinic over 4 months. These cases of meningioma presented primarily to us with ophthalmic features and were diagnosed by us.

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Groundwater samples were gathered from various sites adjacent to Manchanabele Reservoir and their uranium concentration was measured using a Light Emitting Diode (LED) fluorimeter. The results show that the uranium concentration varied widely from 0.2 to 358.

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Purpose: The current study aims to assess incidence of postoperative macular edema (PME), risk factors behind PME and outcomes after cataract surgery in eyes with retinal vein occlusion (RVO).

Methods: This retrospective study included 162 eyes of 162 RVO patients, who underwent cataract surgery between 1 January 2015 and 31 December 2019. Eyes with RVO which did not have cystoid macular edema (CME) on optical coherence tomography (OCT) within the immediate 1 month prior to surgery were included.

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Background: Atypical optic neuritis, consisting of neuromyelitis optica spectrum disorders (NMOSD) or myelin oligodendrocyte glycoprotein antibody disease (MOGAD), has a very similar presentation but different prognostic implications and long-term management strategies. Vascular and metabolic factors are being thought to play a role in such autoimmune neuro-inflammatory disorders, apart from the obvious immune mediated damage. With the advent of optical coherence tomography angiography (OCTA), it is easy to pick up on these subclinical macular microvascular and structural changes.

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We present a case of a young woman who presented with blurring of vision in her right eye, worsening on near work. Detailed ophthalmic and neurological evaluation was done, which revealed light near dissociation, vermiform iris movements, constriction to diluted pilocarpine with absent deep tendon reflexes. Laboratory investigation indicated mild iron deficiency anemia and reduced vitamin D3 level.

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Introduction: Intrathecal opioid is an analgesic option in laparoscopic surgery. We assessed primarily the intraoperative opioid requirement amongst patients receiving intrathecal morphine (ITM) (Group M) versus standard care (Group C) for abdominal surgery. The secondary outcomes were intraoperative haemodynamic changes, extubation on table and pain scores in the intensive care unit (ICU) at 6 th hourly intervals for 24 h postoperatively.

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Calciphylaxis, also known as calcific uremic arteriolopathy, is a rare and severe condition that predominantly affects individuals with end-stage kidney disease (ESKD). It manifests through vascular calcifications that precipitate tissue necrosis, with cutaneous manifestations being common. However, gastrointestinal involvement is an infrequent but gravely serious occurrence.

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Purpose: To document how acute cerebrovascular accidents (CVAs) present first to an ophthalmologist.

Methods: Retrospective, observational, unicentric hospital-based study. The electronic medical records of new patients who presented to the Neuro-ophthalmology department of a tertiary eye hospital in the month of August 2022 were reviewed.

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Background: The aim of this study was to determine the long-term effect of increasing water intake in patients with autosomal dominant polycystic kidney disease (ADPKD) on longitudinal changes in health-related quality of life (HRQoL) in the setting of a clinical trial.

Methods: Self-completed HRQoL (using the KDQoL-SF, v.1.

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Methemoglobinemia is a rare dyshemoglobin disorder which can either be congenital or acquired. Dyshemoglobin disorders can be asymptomatic or symptomatic. We narrate the case of a 12-year-old girl who presented with a fever, cough, and oxygen saturation of 85%.

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Pseudoaneurysm of the internal carotid artery caused by skull base osteomyelitis (SBO) is a lethal condition seen in immunocompromised patients, predominantly those with diabetes mellitus. Cranial nerve involvement is a common complication and generally indicates a poor prognosis. We report the case of a 62-year-old diabetic patient who presented with isolated sixth cranial nerve palsy.

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Cryoglobulinaemia vasculitis can present with a variety of symptoms and there is limited data on the incidence and presentation of cryoglobulinaemia vasculitis in haemodialysis patients. We report a case of a 63-year-old male who had a series of presentations with rash, visual changes, abdominal pain, weight loss, fevers and digital ischaemia. This is on a background of a congenital single kidney with end-stage renal failure secondary to diabetes and hypertension, receiving haemodialysis for nearly 5 years.

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Background: Low-density lipoprotein-cholesterol (LDL-C) is an independent risk factor for atherosclerotic cardiovascular disease (ASCVD) progression. Although lipid lowering therapies remain the cornerstone of secondary ACSVD prevention, there exists residual dyslipidemia. The current study aimed to evaluate the real-world experience related to the treatment patterns and LDL-C control in Indian Acute Coronary Syndrome (ACS) patients.

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Rationale & Objective: The development of new therapies for autosomal dominant polycystic kidney disease requires clinical trials to be conducted efficiently. In this study, the factors affecting the recruitment and retention of participants enrolled in a 3-year randomized controlled trial in autosomal dominant polycystic kidney disease were investigated.

Study Design: Qualitative study.

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Purpose: To compare glaucomatous from non-glaucomatous optic atrophy using optical coherence tomography (OCT) based on the measurement values of Bruch's membrane opening minimum rim width (BMO-MRW), which is a difficult task otherwise due to their varied course of disease progression, treatment protocols, and systemic association to visual impairment.

Methods: This study was conducted in 40 eyes, comprising 20 eyes with non-glaucomatous optic neuropathy (NGON) and 20 eyes with glaucomatous optic neuropathy (GON). All patients underwent a complete ophthalmic examination followed by an OCT optic disc scan to calculate the measurement of BMO-MRW.

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A 40-year-old male presented with abdominal distension and dyspnea. On evaluation found to have hepatic plasmacytoma without marrow clonal plasma cells. Fluorescent in situ hybridization (FISH) on tissue biopsy revealed myeloma-defining cytogenetics.

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Introduction: Next-generation sequencing (NGS) elucidates the diffuse large B-cell lymphoma (DLBCL) genetic characteristics by finding recurrent and novel somatic mutations. This observational study attempted to create an NGS panel with a focus on identifying novel somatic mutations which could have potential clinical and therapeutic implications. This panel was created to look for mutations in 133 genes chosen on basis of a literature review and it was used to sequence the tumor DNA of 20 DLBCL patients after a centralized histopathologic review.

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