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Related Concept Videos

Imaging Studies III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...
Glaucoma: Overview01:25

Glaucoma: Overview

Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...
Open Angle Glaucoma: Treatment01:27

Open Angle Glaucoma: Treatment

In open-angle glaucoma, the iridocorneal angle remains open, but the trabecular meshwork becomes stiff, slowing down the outflow of aqueous humor. This causes a buildup of aqueous humor in the anterior chamber, leading to a sudden increase in intraocular pressure. The treatment for open-angle glaucoma focuses on reducing the elevated intraocular pressure by either decreasing the secretion of aqueous humor or increasing its outflow.
Drugs such as carbonic anhydrase inhibitors, α2- and...
Computed Tomography01:10

Computed Tomography

Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
Imaging Studies VII: Vascular Imaging01:19

Imaging Studies VII: Vascular Imaging

DefinitionRenal angiography, also known as renal arteriography, is an imaging technique used to obtain a comprehensive view of blood flow and the vascular structure of blood vessels in the kidneys and surrounding areas.PurposeRenal angiography detects blood vessel abnormalities in the kidneys, such as aneurysms, stenosis, thrombosis, vascular tumors, and renal artery stenosis. It evaluates kidney function and guides interventional treatments like angioplasty or stent placement.Pre-Procedure...
Angle Closure Glaucoma: Treatment01:28

Angle Closure Glaucoma: Treatment

Angle-closure glaucoma, or closed-angle glaucoma, is an eye condition where the iris bulges out and blocks the iridocorneal angle, resulting in a buildup of aqueous humor and increased intraocular pressure. Immediate medical attention is necessary due to the sudden onset of symptoms. The treatment for angle-closure glaucoma includes short-term and long-term approaches. Short-term treatment involves using eye drops like pilocarpine to lower intraocular pressure by increasing aqueous humor...

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Related Experiment Video

Updated: May 9, 2026

In vivo Structural Assessments of Ocular Disease in Rodent Models using Optical Coherence Tomography
07:44

In vivo Structural Assessments of Ocular Disease in Rodent Models using Optical Coherence Tomography

Published on: July 24, 2020

Optical coherence tomography imaging in uveitis.

Sumru Onal1, Ilknur Tugal-Tutkun, Piergiorgio Neri

  • 1Department of Ophthalmology, Koc University School of Medicine, Istanbul, Turkey, sumruo_md@yahoo.com.

International Ophthalmology
|July 10, 2013
PubMed
Summary

Optical coherence tomography (OCT) provides detailed in vivo imaging for diagnosing and monitoring uveitis. Spectral-domain OCT (SD-OCT) is crucial for assessing macular edema and other inflammatory eye conditions, aiding treatment and prognosis.

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Doppler Optical Coherence Tomography of Retinal Circulation
10:46

Doppler Optical Coherence Tomography of Retinal Circulation

Published on: September 18, 2012

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Last Updated: May 9, 2026

In vivo Structural Assessments of Ocular Disease in Rodent Models using Optical Coherence Tomography
07:44

In vivo Structural Assessments of Ocular Disease in Rodent Models using Optical Coherence Tomography

Published on: July 24, 2020

Doppler Optical Coherence Tomography of Retinal Circulation
10:46

Doppler Optical Coherence Tomography of Retinal Circulation

Published on: September 18, 2012

Area of Science:

  • Ophthalmology
  • Medical Imaging
  • Retinal Diseases

Background:

  • Optical coherence tomography (OCT) is a non-contact, noninvasive imaging technique for ocular structures.
  • Introduced clinically two decades ago, OCT technology has advanced significantly, including spectral-domain OCT (SD-OCT).
  • SD-OCT is now integral to uveitis practice.

Purpose of the Study:

  • To highlight the diagnostic and prognostic value of OCT in uveitis.
  • To discuss the role of SD-OCT in assessing macular pathologies and treatment response.
  • To explore how OCT advances have improved understanding of uveitis pathophysiology.

Main Methods:

  • Utilizing spectral-domain OCT (SD-OCT) for high-resolution imaging of retinal layers and choroid.
  • Employing enhanced depth imaging for visualization of choroidal structures.
  • Analyzing structural changes in uveitic conditions affecting the retina and choroid.

Main Results:

  • SD-OCT enables objective assessment of treatment response and visual prognosis in uveitis.
  • It is the standard for diagnosing and monitoring uveitic macular edema and related pathologies.
  • SD-OCT visualizes key retinal layers and choroid, revealing insights into outer retinal pathology.
  • Enhanced depth imaging allows choroidal and choriocapillaris visualization.

Conclusions:

  • OCT is an indispensable tool for diagnosing and managing inflammatory eye diseases.
  • SD-OCT provides critical information on inner and outer retinal changes in uveitis.
  • Continued OCT development promises further insights into retinal and choroidal diseases.