Prescription glasses are aimed at helping people see clearly. In order to achieve this goal, the lenses of prescription glasses are delicately polished and ranked into various degrees so that they can be ingratiated to different need. On the opposite, non prescription glasses, free from the responsibility of correcting people’s vision, might be simpler to make, aren’t they? The answer is no, of cause. That is a universal misunderstanding. Non prescription glasses are not simpler than the prescription ones.
Although non prescription glasses have nothing to do with correcting people’s eyesight, they still share the responsibility of protecting people’s eyes. Eyes, which are very important for human beings, expose in to the open air all days. There are countless factors that can do harm to them, the cold air, the sands blown by the wind and the solar radials of the sun. Non prescription glasses, covering eyes without changing the eyesight, are able to protect eyes from those unhealthy elements. They are just like a protective screen in front of the eyes, with which people can see clearly and safely.
Besides the security consideration, aesthetic goal should also be take to account. For some people who have no vision problem, they would like to choose a pair of non prescription glasses as an ornament. Sometimes they use it to cover the defect of their eyes, sometimes they want to looks wiser and sometimes, the glasses just a sign to tell that the wearer is working. It works under whatever condition.
At last, the most important and basic require for non prescription glasses is 100 percent non prescription lenses. Non prescription glasses are for people who have no vision problems. It must do no harm to healthy eyesight. Compared with prescription lenses, non prescription ones are not simpler. They even have higher standard as they allows no minimum error. To achieve that, the lens maker must employ advanced skill and accurate tests.
Therefore, don’t overlook non prescription glasses. They are not simpler than the prescription ones.