Decrease in corneal sensitivity and change in tear function in dry eye

Ke Ping Xu, Yukiko Yagi, Kazuo Tsubota

研究成果: Article査読

174 被引用数 (Scopus)


Our purpose was to investigate the relationship between insufficient tear secretion and decreased corneal sensitivity. We studied 59 patients with dry eye, 15 of whom had Sjogren's syndrome (SS), and 26 healthy subjects. Corneal sensitivity was measured by the esthesiometer of Cochet and Bonnet. Schirmer test with or without anesthesia, tear clearance rate, tear function index, and rose bengal and fluorescein staining were also evaluated. The mean corneal sensitivity of either dry-eye group (4.6±1.2 and 4.5±1.2 cm for non-SS and SS dry eye, respectively) was significantly lower than that of the control (5.8±0.4 cm, p < 0.001). Corneal sensitivity correlated significantly with the Schirmer values with anesthesia and the tear function index in the two dry-eye groups and the control (p < 0.05). There were significant relationships between corneal sensitivity and the rose bengal and fluorescein scores in the three groups (p < 0.05). Hyposecretion of tears in dry eye may lead to pathologic changes in corneal epithelium and a decline in corneal sensitivity. Prompt treatment of dry eye is essential to maintain a normal corneal protective mechanism.

出版ステータスPublished - 1996 4月 29

ASJC Scopus subject areas

  • 眼科学


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