Abstract
In this study 26 eyes of 14 patients diagnosed with drug-induced epithelial kera- topathy, 10 eyes of five patients with Sjögren’s syndrome, and 10 eyes of five normal volunteers were examined for damages to conjunctival epithelium using sulforhodamine B (SRB) and rose bengal (RB). In both stainings the damage at the nasal and temporal bulbar conjunctiva was scored (0 to 3) on the basis of severity; the values were totaled for the eye. In drug-induced keratopathy, precorneal tear film changes were also examined using a new tear surface observing system.
In drug-induced epithelial keratopathy, conjunctival epithelial damage was disclosed in two eyes of two patients by both SRB and RB (both score 1). In Sjögren’s syndrome, prominent conjunctival epithelial damage was detected (SRB score: 5.1 [mean]; RB score: 4.8 [mean]), with no staining in normal eyes. Precorneal tear instability was seen in 15 eyes of nine patients with drug-induced epithelial keratopathy (out of 18 eyes in 10 patients); this finding disappeared after corneal damage resolution.
Results of this study reveal that in drug-induced epithelial keratopathy conjunctival epithelial damage is minimal, even when the corneal epithelium is severely damaged and tear/corneal surface interaction is deteriorated.
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Yokoi, N., Komuro, A., Takehisa, Y., Kinoshita, S. (1997). Clinical Assessment of Conjunctival Damage and Tear Film Stability in Drug-Induced Epithelial Keratopathy. In: Lass, J.H. (eds) Advances in Corneal Research. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-5389-2_6
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DOI: https://doi.org/10.1007/978-1-4615-5389-2_6
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