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Related Concept Videos

Pulmonary Tuberculosis II01:28

Pulmonary Tuberculosis II

Tuberculosis, or TB, is a bacterial infectious disease caused by Mycobacterium tuberculosis. While its primary impact is on the lungs, leading to pulmonary tuberculosis, it can also affect various other organs, a condition referred to as extrapulmonary tuberculosis.
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...
Pulmonary Tuberculosis III01:31

Pulmonary Tuberculosis III

Tuberculosis (TB) is a contagious infection primarily affecting the lung parenchyma but which can also affect other body parts. TB can be classified based on disease development, presentation, and the affected anatomical site.
The first classification is based on the development of the disease, and it includes the following categories:
Pulmonary Tuberculosis V01:28

Pulmonary Tuberculosis V

Medical management of tuberculosis (TB) patients involves a comprehensive approach that includes diagnosis, treatment, and monitoring. The specific strategies can vary depending on the type of tuberculosis (latent or active), the patient's overall health status, and other considerations.
Latent tuberculosis infection occurs when TB bacteria are present in a person's body, but are not causing illness or symptoms. It is not contagious, and preventive treatment is crucial to avoid the progression...
Pulmonary Tuberculosis I01:29

Pulmonary Tuberculosis I

Tuberculosis, often called TB, is a contagious illness primarily caused by Mycobacterium tuberculosis. It mainly affects the lung parenchyma but can also impact other body parts.
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
Pulmonary Tuberculosis IV01:26

Pulmonary Tuberculosis IV

Tuberculosis, more commonly referred to as TB, is an infectious disease stemming from Mycobacterium tuberculosis. While it primarily impacts the lungs, TB can also affect other body areas. Given its severity and global impact, timely and accurate diagnosis is crucial for controlling its spread and improving patient outcomes.
Several diagnostic approaches are used to detect TB. The conventional method is the Tuberculin Skin Test (TST), also known as the Mantoux test. However, this method has...
Tuberculosis01:23

Tuberculosis

Tuberculosis (TB) remains a significant global health concern, primarily targeting the lungs and spreading through airborne transmission. Infection begins when aerosolized droplet nuclei, expelled by an individual with active TB, are inhaled by another person. These microscopic particles carry Mycobacterium tuberculosis, the causative agent of TB. Upon reaching the alveoli, the bacilli are engulfed by alveolar macrophages. However, due to their specialized lipid-rich cell wall, these pathogens...

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Related Experiment Video

Updated: Jun 27, 2026

Primed Mycobacterial Uveitis (PMU) as a Model for Post-Infectious Uveitis
10:33

Primed Mycobacterial Uveitis (PMU) as a Model for Post-Infectious Uveitis

Published on: December 17, 2021

Systemic tuberculosis presenting with acute transient myopia: a case report.

Sher A Aslam1, Shahram Kashani, Roland K Morley

  • 1Moorfields Eye Hospital, London, UK. Sher.Aslam@moorfields.nhs.uk

Journal of Medical Case Reports
|November 19, 2008
PubMed
Summary
This summary is machine-generated.

Transient myopia, a rare symptom of tuberculosis (TB), can cause sudden blurred vision. This case highlights TB as a potential cause of acute myopia, possibly due to uveal effusion impacting the eye's structure.

Related Experiment Videos

Last Updated: Jun 27, 2026

Primed Mycobacterial Uveitis (PMU) as a Model for Post-Infectious Uveitis
10:33

Primed Mycobacterial Uveitis (PMU) as a Model for Post-Infectious Uveitis

Published on: December 17, 2021

Area of Science:

  • Ophthalmology
  • Infectious Diseases
  • Endocrinology

Background:

  • Transient myopia is a known ocular condition with various causes, including systemic conditions.
  • Systemic tuberculosis (TB) is rarely associated with transient myopia.

Purpose of the Study:

  • To report a rare case of transient myopia as a presenting feature of systemic tuberculosis.
  • To explore the potential mechanism of myopia development in the context of TB.

Main Methods:

  • A case study of a 29-year-old Indian woman with sudden blurred vision and fever.
  • Diagnostic workup included ophthalmological examination, gonioscopy, Mantoux test, and imaging (CT, MRI) of the spine and abdomen.
  • Identification of Mycobacterium tuberculosis in loin abscess aspirate.

Main Results:

  • The patient presented with significant visual acuity loss, improving with pinhole correction.
  • Systemic examination revealed a psoas abscess positive for Mycobacterium tuberculosis.
  • Ophthalmological findings included narrow angles on gonioscopy.

Conclusions:

  • Transient myopia can be an unusual presenting sign of systemic tuberculosis.
  • A proposed mechanism involves uveal effusion secondary to TB, leading to anterior rotation of the iris-lens diaphragm, angle narrowing, and acute myopia.