Bifocal Glasses

Bifocal is a kind of glasses that were developed to offset a common vision problem among presbyopic wearers. Bifocal glasses have to be equipped with two focal points. Presbyopia was a common vision problem to those people who were going to fifties or becoming older. This visual problem caused a difficulty in seeing close up objects. People often call this eye problem:” too short arms”, this common phrase describe this symptom vividly. Why they called this? This is because presbyopic patients are used to hold the reading objects at an arm’s length, in which position can they see clearly. The need for bifocal eyeglasses is still driven by another visual problem, either nearsightedness or farsightedness. Some presbyopic patients have got farsightedness or myopia at an earlier age. Without the help … Read entire article »

Recently, new findings show that as the increasing of age, the population of people having myopia also increases. In 1980s, 6 year old who have myopia are 4%, 18 year old are 80% in the same age children. But now, the rate of 6 year children got myopia is 10% and 18 year old is nearly 85%. Myopia is not problem in our country, but all around the world. Myopia can not only has a bad effect of kids’ vision health, but also affect their future occupation. So, how can we protect our eye? Some experts discovered that bifocal eyeglasses can slow down the space of kids’ myopia. Researchers of Queensland University of Technology in Australia did a research among 135 teenagers whose ages are about ten year old. They were … Read entire article »