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Related Experiment Videos

Pathogenesis of epidemic dropsy glaucoma.

M S Sachdev1, N N Sood, L K Verma

  • 1Department of Ophthalmology, Dr Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi.

Archives of Ophthalmology (Chicago, Ill. : 1960)
|September 1, 1988
PubMed
Summary

Epidemic dropsy glaucoma, characterized by high intraocular pressure, involves elevated prostaglandin E2 and histamine. This suggests a hypersecretory mechanism, not trabecular damage, is key in its development.

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Area of Science:

  • Ophthalmology
  • Glaucoma Research
  • Biochemistry

Background:

  • Epidemic dropsy can cause elevated intraocular pressure (IOP).
  • The pathogenesis of epidemic dropsy glaucoma remains unclear.
  • Distinguishing it from other open-angle glaucomas is crucial.

Purpose of the Study:

  • To investigate the underlying mechanisms of epidemic dropsy glaucoma.
  • To analyze aqueous humor composition and outflow facility in affected patients.
  • To determine the role of inflammatory mediators and protein levels.

Main Methods:

  • Studied 31 patients with epidemic dropsy and raised IOP.
  • Assessed intraocular pressure, outflow facility, and anterior segment inflammation.
  • Performed aqueous bioassays for prostaglandin E2 and histamine.

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  • Conducted aqueous biochemical analysis for protein and globulin levels.
  • Examined trabecular meshwork via histopathology in surgical specimens.

    • Main Results:

    • Glaucoma was bilateral with open angles and no inflammation.
    • Outflow facility was normal (C value: 0.24 +/- 0.09 microL/min/mm Hg).
    • Elevated prostaglandin E2 (23.33 +/- 4.32 ng/mL) and histamine (13.0 +/- 2.76 ng/mL) were found in aqueous humor.
    • Increased total protein (1.03 +/- 0.10 g/L) was observed.
    • Trabecular meshwork appeared normal in most specimens (11/12).

    Conclusions:

    • Epidemic dropsy glaucoma is characterized by a hypersecretory process.
    • Prostaglandin and histamine release are implicated in its pathogenesis.
    • The condition does not appear to stem from primary trabecular meshwork dysfunction.