What causes flashes in the eyes?
May 25, 2024
Source: Cainiu Health
Dr. Wang Shuai
Introduction
In general, eye flashes may be related to factors such as eye strain, eye injury, trichiasis (inverted eyelashes), conjunctivitis, or tic disorders. If discomfort occurs, it is recommended to seek medical attention promptly. In daily life, maintain good hygiene habits: wash hands frequently, avoid rubbing the eyes with hands, and refrain from squeezing the eyes. Use your eyes properly by avoiding staying up late and minimizing prolonged use of electronic devices.
Under normal circumstances, eye flashes may be related to factors such as eye strain, ocular injury, vitreous opacities, posterior vitreous detachment, and retinal detachment. If discomfort occurs, it is recommended to seek medical attention promptly. Detailed analysis is as follows:
1. Eye strain
Prolonged use of mobile phones or electronic devices may lead to eye fatigue, resulting in the sensation of flashes in the eyes. This is a normal physiological condition that does not require special treatment. However, adequate rest and adjustment of visual habits are necessary.
2. Ocular injury
Ocular trauma may damage the optic nerve and capillaries in the eye, thereby affecting vision and causing flashes. In the early stage, under medical guidance, apply an ice pack to the affected eye to reduce swelling. After 24 hours, switch to warm compresses with a heated towel to promote local blood circulation and relieve ocular discomfort.
3. Vitreous opacities
Vitreous opacities, also known as floaters, represent an age-related change in the vitreous body. As human organs gradually degenerate, the vitreous undergoes aging as well, potentially leading to flashes in the vision or the appearance of floating dark spots. Medications such as Fuming tablets, acarbose tablets, or fluorometholone eye drops may be used according to medical advice to promote tissue repair, regeneration, and absorption of vitreous opacities.
4. Posterior vitreous detachment
Posterior vitreous detachment refers to separation between the inner limiting membrane of the retina and the posterior vitreous membrane, typically occurring on the basis of vitreous liquefaction. With aging, the vitreous gradually liquefies, leading to degeneration and contraction in certain areas. This may cause sensations of flashing lights, along with symptoms such as floating dark shadows in the visual field or decreased vision. It is recommended to visit a qualified hospital promptly for laser therapy to destroy neovascularization and fibrous strands on the retina, causing them to atrophy and thereby improving symptoms.
5. Retinal detachment
Retinal detachment is commonly associated with conditions such as high myopia, ocular trauma, and uveitis. When the neurosensory retina separates from the retinal pigment epithelium, patients often experience flashes of light, accompanied by symptoms such as a shadow blocking part of the visual field or sudden loss of vision. Prompt medical evaluation at a reputable hospital is advised. Scleral buckling surgery may be performed to encircle and secure the eyeball, helping reattach the retina.
In daily life, maintain good hygiene practices: wash hands frequently, avoid rubbing the eyes, and refrain from squeezing or pressing the eyes. Wear tinted glasses when outdoors to protect against ultraviolet radiation. Use your eyes wisely—avoid staying up late and minimize prolonged use of electronic devices.
