As such some of what we see is just the brains interpretation of sensations from the eye structure and the pressure applied to it. Try rubbing your closed eyes and you will see what I mean. Always remember that the number one job of the brain is pattern recognition.
Emphysema is a form of chronic (long-term) lung disease, usually caused by smoking. Because of lung damage, people with emphysema have difficulty blowing air out. The major symptom of emphysema is shortness of breath.
The most common cause of emphysema is cigarette smoking, although rare forms of emphysema may occur in non-smokers. Emphysema may be present with other lung diseases, such as chronic bronchitis and asthma.Like emphysema, these diseases are made worse by cigarette smoking.Emphysema and chronic bronchitis are often grouped together and commonly called chronic obstructive pulmonary disease (COPD). Exposure to air pollution and noxious particles or gases could also cause or worsen these conditions.he most common cause of emphysema is cigarette smoking, although rare forms of emphysema may occur in non-smokers. Emphysema may be present with other lung diseases, such as chronic bronchitis and asthma.