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.
What effect does haze have on the ability to see traffic or terrain features during flight? A. Haze creates the illusion of being a greater distance than actual from the runway, and causes pilots to fly a lower approach. B. Haze causes the eyes to focus at infinity, making terrain features harder to see. C. The eyes tend to overwork in haze and do not detect relative movement easily.