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.
Under what condition, if any, may a pilot allow a person who is obviously under the influence of drugs to be carried aboard an aircraft? A) In an emergency or if the person is a medical patient under proper care. B) Only if the person does not have access to the cockpit or pilot's compartment. C) Under no condition.