Floaters, also known as vitreous opacities, can be categorized into physiological and pathological vitreous opacities. Physiological vitreous opacities generally do not affect vision, whereas pathological vitreous opacities can severely impact vision. In cases of physiological vitreous opacities, patients typically see unfixed, floating objects in their vision, which vary in shape and become more noticeable in bright light, but less clear in the dark. Examinations mainly include ocular B-ultrasound, fundus photography, and fibroscope examination, which can fully assess the extent of vitreous opacity. Once vitreous opacities occur, it is important to rest, seek active treatment, and have regular follow-up examinations.