There is a circle in the eye, mainly seen in the following conditions: 1. Macular area lesions, such as central pulpy chorioretinopathy, a disc-like edematous bulge in the macula leading to a circle in the center of the visual field. Central pulp is self-limiting and can be treated with photodynamic therapy or laser if it recurs. Macular edema caused by uveitis, retinal vein obstruction, etc., will also show similar symptoms and need vitreous cavity injection of anti-VEGF medication if necessary.2. Posterior vitreous detachment, the vitreous in normal state is gel-like and tightly adhered to the retina. In pathological conditions, such as high myopia or the elderly, the vitreous gradually liquefies and becomes cloudy, and the connection between it and the retina becomes less tight than before. When the eye is struck by an external force or when the abdominal pressure increases, the vitreous separates from the retina and forms a ring in front of the optic papilla, clinically called the Weiss ring, which generally does not need to be treated. However, for patients with high myopia, it is recommended to improve fundus examination to exclude lesions such as retinal fissures.