Fluoroscopy is the use of fluorescent properties of fluorescein can be quickly checked for lesions in many parts of the body, the results of the examination is more accurate, high sensitivity. It can be used in gynecological examination, dermatological examination, fundus examination and so on. 1. For gynecological diseases: fluorescence examination technology visual diagnosis, the use of medical built-in fluorescent rod inherent chemical reaction produces a specific wavelength of light on the cervix, used for gynecological screening of the cervix, vaginal walls and vulva lesions. 2. For dermatologic examination: fluorescence examination is applied in the diagnosis and mechanism research of herpetic dermatosis and lupus erythematosus skin. 3. For fundus examination: fundus fluorescence imaging is one of the commonly used methods for fundus examination in clinic, mainly through the fluorescence produced by intravenous injection of fluorescein, so as to examine the vascular structure or lesions of the patient’s fundus, which is of great significance to the diagnosis of the patient’s ocular diseases.