According to the poll, 38% of respondents possessed only one pair of glasses, while only 8% owned three to five pairs, which included spares, prescription sunglasses, occupational lenses, and so on. One in every twelve people has numerous pairings, that's all. In comparison, 5% of respondents own one pair of shoes, while 33% own three to five pairs. There are more shoes than glasses.
People tend to overestimate how many items they own. For example, researchers found that half of all respondents believed that they had fewer than five suitcases when in fact they had around eight. It seems we can't help making mistakes when counting our possessions. A study of Japanese people found that they underestimated the number of objects they had by about the same amount as everyone else. They thought they had about six items per person on average but actually had nine!
In reality, the world's population owns less than 200 million pairs of glasses. That's less than 1 pair per person!
Even though glass is a very common thing to lose, only few people actually lose their entire collection. A study of consumer behavior found that only 1 in 100 people will even consider buying an entire set of glasses just because they're having trouble finding someone's old ones. Most people will simply toss out or give away their frames instead.
That means there are really few opportunities to find used glasses. When people do get rid of their glasses, it's usually because they need a new model or design.
Having less-than-perfect eyesight is more frequent than you would imagine. According to the Vision Council, around 75% of individuals utilize vision correction. Approximately 64% of them wear glasses, while about 11% utilize contact lenses entirely or in conjunction with glasses. How many individuals do you know that wear glasses?
The need for glasses varies from person to person. Some people are nearsighted, which means they need close up work like reading maps or books. Others are farsighted, which means they need things far away like watching TV or driving at night. Still others have astigmatism, which is when your eye's lens isn't symmetrical. They need both near and far vision to correct this problem.
Glasses can be any shape or style; however, the most common ones are round, half-round, and square.
Why do people need glasses? If you're asking this question, then you know at least one individual who needs glasses. Nearsightedness is the most common cause of needing glasses. It affects nearly all adults to some degree. By age 50, almost every man is nearsighted to some extent. For women, this rate increases to 90%.
If you're wondering how many people wear glasses, just think about those you know who don't require corrective lenses.
A pair of spectacles from a small, independent optometrist may cost $500, which includes frames and lenses. In comparison, Specsavers, a British retailer that started in Australia two years ago, promises full spectacles for $59 or two "designer" pairs for $179 or $199. Lensmart sells similar prices lenses without the frame.
Optometry is not yet a recognized profession in Australia, so there are no regulations regarding training or requirements for eye doctors. However, most states have guidelines that control the quality of care provided by optometrists. For example, in New South Wales they must hold an active license to practice optometry and must complete at least 33 hours of postgraduate education within five years of starting practice.
Glasses can be expensive in Australia - about 10 percent of Australians suffer from visual impairment due to uncorrected lens wear. If you plan to visit some other countries in Oceania, be aware that glasses are usually cheaper there, so if you need glasses - get them before you leave home.