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Observation of corneal epithelial disturbance through soft contact lens using fluorescein dextran
J Sugita1, N Yokoi, S Kinoshita
1Department of Ophthalmology, Kyoto Prefectural University of Medicine, Japan.
Purpose:
To confirm the usefulness of fluorescein dextran as a vital dye for observing corneal epithelial disturbance through a medical-use soft contact lens.
Methods:
Ten percent fluorescein isothiocyanate-dextran (FITC-dextran) was used as the staining dye. Patients with corneal epithelial disturbance who were wearing therapeutic soft contact lenses were observed using FITC-dextran.
Results:
Through the soft contact lens, FITC-dextran enabled corneal disturbance observation similar to that seen with sodium fluorescein. In a case of corneal perforation, as well, positive Seidel's test was confirmed through the soft contact lens using this technique.
Conclusion:
FITC-dextran is considered a useful dye for examining the corneal epithelial condition without contact lens removal.