Yue X, et al. - The goal of this paper was to use fluorescent brightener 85 (FB 85), a new fluorescent reagent for fungi detection. Researchers also intended to gauge this new method based on the diagnostic positive rate, accuracy and efficiency in suspected onychomycosis compared with the potassium hydroxide (KOH) method. The FB 85 fluorescent method was discovered to be an accurate and efficient technique, displaying a higher positive rate than the KOH method. An increase could be gained in the diagnostic accuracy and efficiency of onychomycosis detection.