Persons with dementia may be confused and disoriented. They are unable to learn new information, and have a tendency to undergo personality changes. Alzheimer's Disease is the most common form of dementia. A disease which damages and destroys the lung tissue. The lungs no longer pass oxygen into the blood and carbon dioxide out of the blood.
Smoking is a major cause of emphysema.
Someone with emphysema may have to wear a mask and carry an oxygen tank to help them breathe. Glaucoma A disease of the retina caused by increased fluid in the eye. Glaucoma is the second leading cause of blindness in the aged. Symptoms are headaches, nausea, and seeing halos around lights. Glaucoma can be treated with medication and surgery.