Limbal Girdle vogt , type1 & type 2 difference

👁 What is Limbal Girdle?

Limbal girdle refers to a white, arc-shaped opacity seen at the peripheral cornea, near the limbus.
It is a common, age-related degeneration, typically asymptomatic.

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🔍 Key Features

• Found in 55% of people aged 40–60
• Seen in almost 100% of individuals over age 80
• Typically bilateral and symmetric
• Most common in the nasal and inferior limbus

 

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🧬 Types of Vogt’s Limbal Girdle

🟡 Type I

• Irregular white band, well-demarcated toward the center
• A lucid interval (clear zone) separates it from the limbus
• Calcium deposition in Bowman’s layer, showing “Swiss cheese” holes
• Considered an early form of band keratopathy

🔵 Type II (True Limbal Girdle)

• Uniform white band, no lucid interval
• Irregular central border
• Associated with elastoid degeneration and elastosis
• Often found alongside pinguecula

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✅ Summary

• Limbal girdle is a non-progressive, age-related corneal degeneration
• Type I: Calcium-based, separated by clear zone
• Type II: Elastin-related, no clear zone, linked with pinguecula
• Usually requires no treatment