If your tie is too tight, you may damage your eyesight.

　　Moorfields Ophthalmology London Hospital Keith Barton, associate ophthalmologist, said: "The main thing to look at is whether your patient has excessive eye pressure. If their tie is too tight, then it needs to be checked. ”Glaucoma is the leading cause of preventable eye blindness in the UK and the US. Most are caused by an increase in fluid in the eyes, causing excessive eye pressure and damage to the eyes. nerve occurred.

　　According to Robert Rich, an ophthalmologist at the New York Eye and Ear Infirmary who led the study, a tight tie can compress the veins in the neck, causing more blood to flow into the eyes, thereby increasing eye pressure. “Excessive pressure on the eyes may eventually cause Eye Causes more severe damage than glaucoma. Men with tight ties and thick necks should be wary of long-term damage to their eye nerves. ”

　　Rich's research team also followed 20 general patients and 20 glaucoma patients. They found that when these patients held their breath, the pressure inside the eyes increased by 2.6 mm Hg and 1.0 mm Hg respectively. But it's unclear how much pressure changes increase the risk of glaucoma. "We don't know what would happen if someone wore a tie for three years," he said. ”

　　However, some other experts say there's no need to give up the tie for this reason. "It's unlikely that most people will develop glaucoma," Barton said. ”But more doctors and researchers believe the findings could help with physical examinations, allowing men to untie their ties first when checking their eyesight.

　　The new research could help ophthalmologists distinguish between long-term increases in eye pressure caused by aging and frailty or transient factors during examinations. According to medical experts, physical weakness is the main factor leading to glaucoma.