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.
Among men, there is no consistent relationship between the size of the flaccid penis and its full erect length. The NHS says the average penis size is about 14-16cm (5.5-6.3 inches) when erect.The average girth for an erect penis is 12-13cm (4.7-5.1 inches).A penis is only said to be unusually small if it is less than 3 inches (7.6cm) long when erect. These measurements were based on a review of 50 studies on penis size conducted since 1942, which between them have measured 11,531 penises.mong men, there is no consistent relationship between the size of the flaccid penis and its full erect length. The NHS says the average penis size is about 14-16cm (5.5-6.3 inches) when erect.