From time to time, many elderly patients find dotted or filamentary or cloudy floating objects floating in front of their eyes, causing a lot of inconvenience and psychological fear in the elderly. The medical term for this condition is vitreous opacity. There are two types of vitreous clouding: pathological vitreous clouding, which occurs in patients with fundus hemorrhage, retinal detachment and uveitis, with varying degrees of vision loss and blurred vision; and physiological, degenerative vitreous clouding, in which the majority of patients have no effect on vision. Although some eye drops and oral medications are available, they are not very effective. Laser treatment of vitreous opacities was introduced at the European Eye Conference in 2014 and is still in the clinical observation phase, with clinical application taking some time. Therefore, elderly patients should not be too concerned about physiological, degenerative vitreous opacities, and there is no need for long-term eye drops and oral medications, as these related medications contain iodine, which may affect ocular surface health and iodine metabolism in the body.