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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...
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Related Experiment Video

Updated: May 31, 2026

Full-Circle Cauterization of Limbal Vascular Plexus for Surgically Induced Glaucoma in Rodents
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[Perioperative visual loss after nonocular surgery].

S Shmygalev1, A R Heller

  • 1Klinik und Poliklinik für Anaesthesiologie und Intensivtherapie, Universitätsklinikum Carl Gustav Carus, Technische Universität Dresden, Fetscherstrasse 74, Dresden, Germany. sergey.shmygalev@uniklinikum-dresden.de

Der Anaesthesist
|June 23, 2011
PubMed
Summary
This summary is machine-generated.

Perioperative visual loss (POVL) is a rare complication after nonocular surgery, often affecting the optic nerve due to ischemia. Understanding risk factors and diagnosis is crucial for prevention and management.

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Area of Science:

  • Ophthalmology
  • Neurology
  • Anesthesiology

Context:

  • Perioperative visual loss (POVL) is an uncommon yet severe complication following nonocular surgeries.
  • It is frequently linked to cardiac, spinal, and head/neck procedures.
  • The exact causes of POVL are not fully understood, affecting various parts of the visual pathway.

Purpose:

  • To review the incidence, suspected risk factors, diagnosis, and treatment of POVL in nonocular surgery.
  • To enhance physician awareness of potential vision loss postoperatively.
  • To consolidate current knowledge on this neuro-ophthalmic complication.

Summary:

  • POVL can impact the entire visual system, with the optic nerve being the most common site of permanent damage, often due to ischemia.
  • Proposed risk factors include prolonged prone positioning, reduced ocular perfusion, significant blood loss, anemia, hypotension, hypoxia, and fluid management.
  • Patient-specific vascular factors may also contribute, highlighting the complexity and variability of POVL pathogenesis.

Impact:

  • Improved clinical awareness and timely diagnosis of POVL.
  • Potential for developing targeted preventative strategies based on identified risk factors.
  • Better patient outcomes and reduced incidence of vision loss after nonocular surgery.