Causes, Keratoconus Treatment In Ghatkopar | mumbaieyecare
Causes of Keratoconus
A family history of keratoconus has been established in some cases. Most researchers believe that multiple, complex factors are required for the development of keratoconus including both genetic and environmental factors.
With the advent of videokeratography to assess family members, however, pedigrees have been analysed. These studies show corneal changes consistent with keratoconus in some family members, which suggest an autosomal dominant pattern of inheritance.
Keratoconus may be associated with wide variety of systemic and ocular conditions.
Systemic associations:
Ocular associations:
Contributory factors such as:
- Enzyme abnormalities in corneal epithelium: Enzyme abnormalities such as increased expression of lysosomal enzymes (catalase and cathepsin) and decreased levels of inhibitors of proteolytic enzymes (tissue inhibitor matrix metalloproteinases), may play a role in corneal stromal degradation.
- Differentially expressed corneal epithelium: Differentially expressed corneal epithelium between keratoconus and myopes (as controls) in both genetic expression and protein expression.
- Molecular defect: Molecular defect producing unusual absence of water channel protein aquaporin 5 in keratoconus as compared to normal corneal epithelium.
- Gelatinolytic activity: Gelatinolytic activity in stroma has been described, which may be due to decreased function of enzyme inhibitors.
- Abnormalities in corneal collagen and its cross-linking: Abnormalities in corneal collagen and its cross-linking may be the cause of keratoconus.
- Hard contact lens wear.
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