Doctor looking at CT scan results of patient's brainMOSCOW, 24 Apr. Blurred vision and clouding in the eyes can be a sign of a brain tumor, writes the British newspaper Daily Express, citing The Brain Tumor Charity. complain that they find it difficult to watch TV or read,” the article reads. that their field of vision has been reduced. In other words, they became less oriented in space and bumped into objects more often. Experts explained that as a result of tumor growth, there is increased pressure on the optic nerve and swelling of the optic nerve head. All this leads to visual impairment. Other common symptoms of a brain tumor include the appearance of headaches, constant nausea, drowsiness, loss of concentration. A tumor in the temporal lobe can contribute to hearing loss, memory impairment, affect the ability to learn, recognize objects or faces, and determine human emotions. Doctors warned that timely diagnosis is key, because the sooner a tumor is detected, the easier it is to treat. Doctors told what symptoms may indicate a brain tumor