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Progressive glasses, also known as seamless multifocals or varifocals, are hi-tech eyeglasses having blended multifocal distance areas into each lens in such a way that upper part is focused for distant vision, center part for middle distance and lower part is for reading purpose or the computer screen. Progressive eyeglasses are made such that focal length of eye changes according to the object. With a single lens you are able to see at variable distances with great ease and comfort so your life is made easy. It is really convenient to look down while reading and also sneak a look into your computer monitor without any distress. They sometimes are also called no-lined multifocals as there are no visible lines. No one will know whether you are using prescription glasses or wearing glasses just for fashion. Since bifocal eyeglasses are associated with old age, use of progressive eyeglasses appears more youthful.

Progressive glasses also provide more natural and better correction of presbyopia than bifocal or trifocal eyeglasses and adapting to them is easier than to others. An annoying problem is caused by bifocal glasses known as image jump. Image seems to jump as the eye moves past the distinct boundary between two lenses. Progressive glasses eliminate this problem because the transition between lens powers is smooth and seamless which let you change focus from near to distance and reverse again more comfortably.
Frames in the past had to be relatively large in order to accommodate all powers of progressive lenses. But lens manufacturers resolved this problem by making short corridor progressive lenses with compact designs having larger reading zones for smaller and fashionable frames used nowadays.

Some progressive eyeglasses are made particularly for computer use which have wider intermediate zone of the corridor. Others may have wider reading portion. Your eye care specialist is the best person to decide which progressive lens style will work for you.

When you have purchased your first progressive eyeglasses you will need a short adaptation period ranging from few hours to few days. If you have blur or swam you may need to slightly move your head to look directly at objects. But these problems will vanish eventually as you adjust. You may take longer adaptation period if you have hyperopic.

There are some disadvantages associated with progressive glasses as well. As the lenses combine various powers in a single surface there are geometric distortions in the vision which increase with addition power. These glasses are comparatively costly and are only available at few local opticians.

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