Floaters generally do not require examination with a slit lamp microscope; they are examined using A-scan or B-scan ultrasonography to assess the extent of vitreous opacity, posterior vitreous detachment, and the status of the vitreous in relation to the retina. Floaters are also known as vitreous opacities and can be categorized into physiological and pathological vitreous opacities. Physiological vitreous opacities generally do not affect vision but appear as some floating objects in front of the eye, which do not change vision. These are more visible in bright light and less visible or absent in low light. If the vitreous opacity is pathological, it can affect vision and requires further ophthalmologic examination and active treatment.