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Cerebral Edema ll: Pathophysiology01:22

Cerebral Edema ll: Pathophysiology

Vasogenic edema is a major form of cerebral edema characterized by abnormal accumulation of fluid in the brain’s extracellular space due to disruption of the blood–brain barrier (BBB). The BBB is a specialized structure composed of endothelial cells connected by tight junctions, supported by astrocytic endfeet and a basement membrane. Under normal conditions, it tightly regulates the movement of ions, proteins, and solutes between the bloodstream and brain parenchyma. When this barrier loses...

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Modeling Cataract Surgery in Mice
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Postsurgical cystoid macular edema.

Dina Zur1, Naomi Fischer, Adnan Tufail

  • 1Department of Ophthalmology, Tel Aviv Sourasky Medical Center, Tel Aviv University Sackler Faculty of Medicine Tel Aviv, Israel.

European Journal of Ophthalmology
|December 25, 2012
PubMed
Summary
This summary is machine-generated.

Cystoid macular edema (CME) can reduce vision after eye surgery. While often resolving spontaneously, treatment with anti-inflammatory drugs and corticosteroids is common for persistent cases.

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Area of Science:

  • Ophthalmology
  • Retinal Diseases
  • Surgical Complications

Background:

  • Cystoid macular edema (CME) is a significant cause of vision loss following ocular surgeries like cataract and vitreoretinal procedures.
  • Its incidence post-cataract surgery ranges from 0.1% to 2.35%, with increased risk factors including pre-existing conditions and intraoperative complications.
  • The exact causes of CME remain unclear, though vitreous prolapse and postoperative inflammation are suspected factors.

Purpose of the Study:

  • To review the diagnosis, differential diagnoses, and management of cystoid macular edema (CME) after ocular surgery.
  • To provide an overview of current treatment strategies for pseudophakic CME.

Main Methods:

  • Review of literature on cystoid macular edema (CME) focusing on diagnosis and treatment.
  • Discussion of diagnostic tools including fluorescein angiography and optical coherence tomography (OCT).

Main Results:

  • Fluorescein angiography reveals characteristic perifoveal petaloid staining, while OCT shows cystic spaces in the outer nuclear layer.
  • Differential diagnoses include age-related macular degeneration and diabetic macular edema.
  • Most cases of pseudophakic CME resolve spontaneously, but treatment may involve topical NSAIDs, corticosteroids, oral carbonic anhydrase inhibitors, or periocular/intraocular steroids for resistant cases.

Conclusions:

  • CME is a common cause of reduced vision post-surgery, with varied diagnostic findings.
  • While many cases resolve spontaneously, effective treatments exist for persistent or resistant CME.
  • Prophylactic treatment efficacy is uncertain, and surgical interventions are reserved for specific situations.