Aphakia is a condition in which there is some degree of clouding of the vitreous body, and these cloudy objects float around in the vitreous cavity, obscuring our vision. The most common cause is vitreous degeneration, as we age, the vitreous body will also appear “aging” phenomenon, that is, from the original gel state into a liquefied state, may also be detached from the tight retina, that is, posterior vitreous detachment. Next is the fundus hemorrhage, blood cloudy vitreous will also appear mosquitoes, in addition to vitreous inflammation. When the vitreous turbidity, people’s subjective vision may see in front of the eyes dotted, flocculent cloudy floating, this mosquito in the look at the white background, the light is more obvious. Fundus hemorrhage refers to retinal vascular hemorrhage located at the base of the eye. Systemic vascular, hematological lesions can be from the retina and its vascular response, but also can directly cause hemorrhagic lesions of the retina. Causes of fundus hemorrhage can be divided into two categories: systemic and local. Systemic lesions include diabetic retinopathy, hypertensive retinopathy, nephropathic retinopathy, toxic retinopathy of pregnancy, and even hematologic and autoimmune diseases can all cause fundus hemorrhage. Localized retinal lesions commonly include central or branch retinal vein obstruction, retinal vasculitis, retinal chorioretinopathy, retinal hemangioma and age-related macular degeneration, high myopia fundus, central retinal chorioretinitis and other choroidal neovascular lesions. In addition, posterior vitreous detachment, which often occurs in the elderly, is accompanied by blood emitted due to fissures in the retina caused by vitreous pulling. When a patient is diagnosed with one of these diseases in internal medicine, he or she should visit the ophthalmology clinic regularly. The main purpose is to help the internist evaluate the extent of the disease suffered by observing the degree of retinal vasculopathy in the fundus, and secondly, to evaluate the threat of these changes to the patient’s visual function. Patients with fundus hemorrhage have different symptoms depending on the amount of hemorrhage and the location of the hemorrhage. If the hemorrhage is small, there may be no obvious symptoms in the periphery of the retina, such as diabetic retinopathy and retinal vascularity, which are often overlooked in the early stages. If the hemorrhage is large, patients may feel a floating black shadow in front of their eyes, or even their vision may be completely blocked by the black shadow, leaving only a sense of light. If the hemorrhage is located in the center of the retina (macula), the patient loses central vision, i.e., the central area is blurred with dark shadows obscuring the periphery and still has partial vision. All of these conditions can seriously threaten the visual function of the patient and most require serious treatment. In case of mydriasis, you should evaluate yourself: 1, is there any underlying medical disease that may cause fundus bleeding? 2.Is there a tendency for the mosquitoes in front of the eyes to increase and become larger? 3.Is it accompanied by other symptoms? If the result of your own evaluation is yes, you should go to the regular hospital ophthalmology for careful examination.