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Thursday, March 5, 2009

Eponyms about Vogt - Ophthalmology

Vogt white limbal girdle:

  • Age related corneal degeneration.
  • Characterized by bilateral, narrow cresentic lines composed of chalky white deposits(present in Bowman’s membrane) in the interpalpebral fissure along the nasal& temporal limbus.

 vogt's white limbal girdle

  • 2 TYPES ARE PRESENT
Type1 Type2
separated from limbus by clear interval No clear zone in between

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Vogt's striae :

  • Seen in keratoconus.
  • With thinning of the cornea vertical lines in the Descemet's membrane become visible. They disappear with pressure on the globe.

vogt striae

Vogt's anterior mosaic crocodile shagreen :

  • Age related corneal degeneration.
  • Anterior mosaic crocodile shagreen appears as bilateral, polygonal, grayish-white opacities separated by relatively clear spaces in the deep layers of the epithelium and in Bowman's layer.

vogt crocodile shagreen patches

Vogt-Koyanagi-Harada (VKH) syndrome: Vogt-Koyanagi-Harada (VKH) disease is a multisystem disorder characterized by granulomatous panuveitis with exudative retinal detachments that is often associated with neurologic and cutaneous manifestations.

Cutaneous features Neurological features Ocular features
Alopecia Meningeal involvement Chronic granulomatous iridocyclitis
Poliosis Encephalopathy

Posterior sgment involvement:

  • multifocal choroiditis
  • multifocal detachments of sensory retina
  • exudative retinal detachment
Vitiligo

Auditory symptoms:

  • tinnitus
  • vertigo
  • deafness

Lucid interval of vogt:

  • Seen in Arcus senilis(Age related corneal degeneration)
  • Arcus senilis appears as a single greyish ring compose of lipid deposits parallel to the limbus and separated from it by a 1 mm lucid interval of Vogt.
  • The classic theory concerning the appearance of arcus cornealis is that lipids migrate from the limbal vascular arcade to the peripheral cornea and the clear interval of Vogt is formed due to absorption of the lipids that are closer to the vascular arcade.

lucid interval of vogt

1 comment:

Grammie said...

http://www.youtube.com/watch?v=objLYWHg4MU&sns=em

See this!

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