Which statement is true about Filamentary Keratopathy?

Which statement is true about Filamentary Keratopathy?

• A. Filaments stain with fluorescein
• B. It never causes irritation
• C. It is exclusively a posterior corneal disease
• D. It is unrelated to neurotrophic keratopathy

Answer: (A)

Filamentary keratopathy involves long strands of desquamated epithelial cells bound by mucus that cling to the corneal surface. When you apply fluorescein, these filaments take up the dye along their length, making them visible as bright, filamentous strands against the stained tear film. This staining property is a practical diagnostic clue, helping you recognize the condition during slit-lamp examination and distinguish FK from other surface diseases. The condition is not harmless to the eye: it typically causes irritation because the filaments can tug at the corneal surface with blinking, and the underlying epithelial damage from tear-film instability adds to discomfort. FK is an anterior corneal surface disease, not a posterior-only process, and it often occurs in settings of dry eye or neurotrophic keratopathy, so it is related to these conditions rather than being unrelated.

Filamentary keratopathy involves long strands of desquamated epithelial cells bound by mucus that cling to the corneal surface. When you apply fluorescein, these filaments take up the dye along their length, making them visible as bright, filamentous strands against the stained tear film. This staining property is a practical diagnostic clue, helping you recognize the condition during slit-lamp examination and distinguish FK from other surface diseases.

The condition is not harmless to the eye: it typically causes irritation because the filaments can tug at the corneal surface with blinking, and the underlying epithelial damage from tear-film instability adds to discomfort. FK is an anterior corneal surface disease, not a posterior-only process, and it often occurs in settings of dry eye or neurotrophic keratopathy, so it is related to these conditions rather than being unrelated.