The main reasons for visual cognitive impairment include the following:
1. Eye disease: Cataract: causes the lens of the eye to become cloudy, which in turn affects vision. Glaucoma: High intraocular pressure, long-term compression of the optic nerve, resulting in decreased vision. Macular disease: mainly affects central vision and may lead to blindness in severe cases. Other eye inflammations, eye injuries, glaucoma, retinal detachment, intraocular tumors, etc. may also lead to visual cognitive impairment.
2. Neurological disorders: Cerebrovascular diseases such as stroke, cerebral infarction, cerebral hemorrhage, etc., may affect the visual conduction pathway and lead to visual cognitive impairment. Brain tumors, especially those located in the sellar region, can directly compress the optic nerve and optic chiasm, causing visual field defects and decreased vision.
3. Other factors: Genetic factors: Some congenital eye diseases, such as congenital cataracts, retinitis pigmentosa, etc., are related to genetic factors. Environmental factors such as long-term overuse of the eyes, exposure to strong light, and eye injuries may increase the risk of visual cognitive impairment. Other systemic diseases, such as hypertension and diabetes, may cause related retinopathy, thus affecting visual cognition.
The causes of visual cognitive impairment are complex and diverse, and specific diagnosis needs to be based on the patient's medical history, clinical manifestations, and relevant examination results. For patients with visual cognitive impairment, timely medical attention should be sought to obtain accurate diagnosis and treatment.