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 length of the labia minora is less than Â¾ inch long (yes, someone got out a ruler and measured 2981 women). 2  Only 1.8% of women have labia longer than 1 Â½ inches. 3  But remember, every vulva is different and special. The average vagina is 3-4 inches long, but fear not if your guy is hung like a horse. 2  The vagina can expand by 200 percent when sexually aroused, kind of like a balloon. 3  Remember, the vagina was made to birth babies, so it's exceedingly elastic.