| As the name reflects, a pair of bifocal safety | | | | help in viewing close up objects. Near vision for |
| eyewear can serve as either bifocal reading | | | | presbyopic people is to some extent very |
| glasses or safety eyeglasses. The reason is that | | | | important when they try to deal with precise |
| this special kind of spectacles combines the | | | | operation on some objects. In this case, bifocal |
| functionalities of traditional bifocals and protective | | | | safety eyewear is a perfect solution. This type of |
| eyewear together. A single pair of bifocal safety | | | | eyewear can meet the needs of the mentioned |
| glasses can provide a user with both visual need | | | | group of people and the others in a similar |
| while reading and eye protection against | | | | situation. The bifocal effect of visual aid marks |
| dangerous sources in the environment. In fact, | | | | the difference between a pair of bifocal safety |
| safety goggles or protective eyeglasses are | | | | glasses and another pair of regular prescription |
| needed by a large number of jobs and hobbies. | | | | spectacles. |
| And people who are operating most power tools | | | | The lens design of bifocal safety eyewear may |
| are highly encouraged to wear protective goggles. | | | | be slightly different from most of the bifocal |
| However, traditional goggles or protective | | | | reading glasses. Lenses of the former type usually |
| eyeglasses are refused by some people who still | | | | come with only a reading power in the bottom |
| need visual aids. Regular prescription goggles are | | | | part, while the upper section is Plano or |
| then introduced to flatter a special group of | | | | non-prescription. Most people know that a regular |
| people who regularly manage power tools and | | | | bifocal lens deals with both presbyopia and |
| suffer nearsightedness or farsightedness. | | | | nearsightedness or hyperopia. But this is not the |
| Nevertheless, for people who have presbyopia | | | | case of the majority of bifocal safety eyeglasses. |
| and have occupations associated with certain | | | | C: bifocal safety eyewear has the basic design |
| power tools, regular prescription goggles are not | | | | that the upper part of a lens has normal |
| enough. The reason is that the vision correction | | | | magnification and the lower portion can facilitate |
| provided by regular prescription goggles will not | | | | reading and similar tasks. |