用红汞作染料进行角膜染色具有同萤光素一样的效果,由于本身有杀菌作用,使用期间无须定期进行消毒。且药源广泛,价格便宜为其优点。在应用中,我们发现红汞对角、结膜有一定的刺激作用,可使一部分正常眼呈现假阳性反应,即被染眼的角膜或球结膜呈现红色小点状或小片状(个别结膜呈大片状)着色,我们曾有因此而误诊为浅层点状角膜炎者。为了 Corneal staining with red mercury as a dye has the same effect as luciferin and, because of its bactericidal effect, eliminates the need for regular disinfection during use. And a wide range of drug sources, cheap for its advantages. In application, we found that mercurochrome diagonal, conjunctiva have a certain stimulating effect, can make part of the normal eye showed false positive reaction, which was corneal or bulbar conjunctiva stained red dot or small (individual conjunctiva was Large flake) coloring, we have been misdiagnosed as shallow punctate keratitis. in order to