White light flashes after trauma may be caused by post vitreous detachment or retinal detachment, and should be diagnosed by an ophthalmologist. 1. Posterior vitreous detachment: Posterior vitreous detachment may occur after trauma and may cause white light flashes in the eyes. Some older people experience vitreous degeneration as they age, which can lead to the above condition. 2. Retinal detachment: This refers to the separation of the neural epithelium and the pigment epithelium of the retina, resulting in white light flashes in the eyes, which may be triggered by trauma. In addition to white light flashes, there may also be vision loss, floaters in front of the eyes and other symptoms, and in serious cases, blindness may occur. After the trauma eyes flash white light should be taken seriously, under the guidance of ophthalmologists, through the relevant examination to clarify the specific causes, and timely treatment.