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How is dye used to detect a corneal abrasion?

April 26, 2017abrasion corneal detect dye Used

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How is dye used to detect a corneal abrasion?

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A dye called fluorescein is placed in the tears. The dye fills in the defect on the cornea. The dye fluoresces when a cobalt blue light is placed on the eye and in this way shows where the defect is [See figure 2].