In bright light, the pupil constricts to reduce the amount of light entering the eye. In dark or dim light, the pupil dilates to allow more light into the eye to improve vision. Normal pupil size tends to range between 2.0 and 5.0 millimeters, depending on the lighting. The younger you are, the larger your pupils tend to be.
Fecal incontinence is commonly caused by altered bowel habits (generally diarrhea, but also constipation) and conditions that affect the ability of the rectum and anus to hold stool. The sphincter muscles become weaker as you grow older.
One group of foods and drinks to avoid if you suffer from fecal incontinence is anything containing caffeine, like coffee, tea, soft drinks and chocolate. These foods and drinks relax the internal anal sphincter muscles and cause bowel leakage and release. Cured, Smoked Meats and Greasy Foods Cured and smoked meats, like sausage, ham and turkey, are another group of foods to avoid if you suffer from fecal incontinence.