Like most healthcare professions, the education and certification of optometrists is regulated in most countries. Optometric professionals and optometry-related organizations interact with governmental agencies, other healthcare professionals, and the community to deliver eye- and vision-care.
The average length of an erect penis is 5.16 inches (13.12 centimeters) and the average circumference is 4.59 inches (11.66 centimeters), according to a new analysis of penis length studies involving more than 15,000 men around the world.
1 the average erect penis is a little more than 5 inches long and 1 5 inches in diameter specifically a 2013 study published in the journal of sexual medicine found the average american man s penis is 5 6 inches 14 2 centimeters long when erect and 4 8 inches in circumferenceonly 15 percent of men are over 7 inches and only three percent are over 8 inchespecifically a 2013 study published in the journal of sexual medicine found the average american man s penis is 5 6 inches 14 2 centimeters long when erect and 4 8 inches in circumference only 15 percent of men are over 7 inches and only three percent are over 8 inches