Kryger Dissing

Long years ago, you have to wear two sets of eye glasses, then doctors discovered the lens at the bifocal eye-glasses,then recently they do the same thing in a bifocal contact lens. The lens is split into two halves,one upper and the other is lower and often it may be in concentric circles,one lens on the internal part and the other is on the outside part. Who need bifocal contacts? People who suffer from Presbyopia that causes difficulty focusing on things which are near and this does not develop after the age 40.They are nearsightedness and farsightedness and suffer from the eye-glasses that are usually with thick lenses and a across them (they become two lenses in one ).These eye-glasses have many problems: First :They are heavy, Second: They're nearly unattractive, Third: It's difficult to adjust to them as you have to look up or look down.All these issues cause vertigo during adapting to these bifocal lenses.The only choice for these people for long years ago was the eye-glasses even after contact lenses came on the market. Today,contact lenses provide bifocal contact lenses which are smooth,rigid and with gas permeable materials.It is double contact,as should you are wearing two sets of glasses in the same time. With a set of bifocal contact lenses,your eye begins gradually to change to the difference of portions as the muscles of the eye coordinate and be trained quickly from and to the correct lens that is required at this time.Example: If someone is reading,so the vision has to be fixed to view the close things at this time,so the pupil of the eye will be directed to the lens that correct the vision and light will be refracted in to the angle of the retina that will help in close reading.But if you begin to look off at things which are far away-as wanting to the sky-the focus of the eye will be directed at this time to the lens that guide you to see the distant point.All of this is due to the different prescription lens of the connections that have the power to refract the light at different angles and correct the vision due to different viewing. That will be better? A bifocal lens within the old-fashioned eye-glasses OR a bifocal contact lens? You have to choose which form you choose.As some people have great problems and problems in wearing the contact lenses as they considered this difficult routine to place in and take out them,even by using special kind that stay for the time,whole the week or higher than a week- they have to change them e