Causes. Bacteria are the primary organisms that cause UTIs. Most common bacteria that cause UTIs include: Escherichia coli and Staphylococcus saprophyticus. About 80-90% of urinary tract infections are caused by Escherichia coli (E. coli). About 80 to 90 percent of UTI are caused by one type of bacteria. 2  Women develop UTI much more often than men. 3  20% of women in the United States develop this condition and 20% of those have a recurrence. 4  Urinary tract infection is less common in men and boys than in women and girls but is more likely to be serious.
A doctoral degree is required to practice optometry, but students should gear their undergraduate degree toward the optometry field by focusing on areas of study like biology, anatomy, organic chemistry, calculus, biochemistry, and physics.
Optometrists must complete a Doctor of Optometry (O.D.) degree program and obtain a license to practice in a particular state. Doctor of Optometry programs take 4 years to complete, and most students have a bachelorâs degree before entering an O.D. program.hat Optometrists Do. Optometrists examine the eyes and other parts of the visual system. They also diagnose, and treat visual problems, and manage diseases, injuries, and other disorders of the eyes.