Spheroidal Degeneration!
Also called Climatic droplet keratopathy/ Actinic keratopathy/Bietti’s band-shaped nodular dystrophy/ Labrador Keratopathy.
RISK FACTORS:
• Increasing age.
• Exposure to UV light (Most common).
• Dry eyes.
• Malnutrition.
• Corneal trauma or microtrauma from wind, sand, low humidity and extreme temperatures.
• Occupational risk factor: Welding burns.
-Epithelium & basement membrane are affected only in advanced stages, during which the Bowman's membrane is often disrupted or absent locally.
SOURCE:
-Diffusion of serum proteins- immunoglobulins and albumins from limbal vessels to the cornea as a result of interactions with UV light.
MANAGEMENT:
• Limiting sun exposure.
• The prognosis is generally good and the majority of patients do not require treatment.
• Only severe cases affecting vision need to be treated.
• Superficial keratectomy, phototherapeutic keratectomy, lamellar keratoplasty, or penetrating keratoplasty in the most severe cases.
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