Presbyopic patients today occupy overwhelming majority of are the people who have suffered from the vision problem of their eyes, especially for these elder ones, the age maybe 40 or above in the old days, but now, this number seems to get a younger level, some individuals even need to wear those reading glasses, which as designed just for this eye problem, after they get to the age of 35! As today, we use a lot of LCDs and LEDs, such as TV, computer monitor and PSP, eyes’ natural age may grow faster than those customers who don’t use them or barely use them at all, how even, farsightedness is not a refractive visual error, that’s the difference between ordinary prescription glasses, and you also need to hand your latest prescription to your optician!
So, in the old days, people who need to spend a long time on close up work every day find solutions to the vision problem when are reading and writing, yeah, that’s single vision reading glasses, human beings are creative for thousands of years, aren’t they? Though these prescription reading glasses are designed simply, they help people to perform normal visual tasks, they are really popular at that time, actually.
However, today, many people are not only suffered from this only one kind of eye problem, many individuals are bothered by both myopia and hyperopia. In a younger age of our life, we may only need to wear ordinary prescription glasses to solve the distance vision for us, however, with the growth of our ages, reading eyeglasses are needed. It is really trouble for people to bring two pairs of eyeglasses and switch them at different circumstance, and this is the reason why we need to wear bifocal reading glasses, who’s lower part are designed for reading and writing, while the up portion is for looking at distance.
In today’s modern society, we need eyeglasses to meet other more tasks, such as computer using, watching TV, and it’s impossible to prepare all these glasses, as this special demand of our customers, manufactures have developed progressive eyeglasses, which have more than two focal points like bifocal ones, it has a visual transition in the center of the lens, and you can feel really smoothly towards the transition, and because of their superior advantages over those single vision and bifocal eyeglasses, they gain the really wide eyewear market acceptance today!