In some cases, the vitreous gel can peel the retina away from the back of the eye, resulting in a macular hole or retinal tear. This can progress into a retinal detachment if left untreated. Injury or trauma Very occasionally, an injury to the eye or trauma can result in a retinal detachment.
Breathing at higher altitudes might be especially difficult if you have COPD as well as another condition, such as high blood pressure, heart disease, or diabetes. Being exposed to high-altitude conditions for more than several days can also affect the heart and kidneys.
Plane brain: Flying really can give you a headache, says study. Traveling from A to B is a headache for many people, whether it's by train, plane or automobile. But the pain is apparently rather more acute when travelling by air for some, researchers have said. They argue that 'airplane headache,' a form of pain that flares up during landing, should get more recognition in the medical world. Pain in the brain: Flying can cause headaches, say researchers.