Patients with retinal vein occlusion may present with decreased vision, distorted vision, and in severe cases, only light perception, while patients with retinal artery occlusion can experience rapid vision loss and loss of vision if it occurs in the central artery. Most of the retinal vein obstruction symptoms are mild, and patients may experience mild vision loss. However, if the disease is prolonged and macular cystoid edema develops, patients may experience more significant vision loss and distorted vision. Some patients may develop ischemic central retinal vein occlusion, with significant vision loss to the extent that they can only recognize the number of fingers. If the retinal artery obstruction occurs in the central retinal artery, the condition is severe and the patient may experience painless loss of vision. Initially, the patient may experience a transient blackout, which recovers on its own for a short period of time. In the early stages of branch retinal artery occlusion, there are no symptoms, while ciliary retinal artery occlusion may present with a black spot in the center of the visual field. It is recommended that patients with retinal vein or arterial obstruction should seek prompt medical attention to evaluate their condition and follow the doctor’s instructions.