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about bifocal glasses

June 22nd, 2015

Bifocal glasses literally means two focuses. It is meant to describe eyeglasses lenses that enable the user to see clearly at two different distance ranges through one lens. Benjamin Franklin is credited with inventing the first bifocal lens by gluing two lens halves from two different lens prescriptions together. Bifocal glasses are used for many reasons, the main reason being for Presbyopia.

Presbyopia is a vision condition in which the crystalline lens within the eye looses its flexibility. At about 40 years of age, we perceive this as increasing difficulty with clearing objects the closer we bring them toward our eyes, especially in low lighting levels. Bifocals have an additional power on the bottom part of the lens to aid in close up focus, enabling clarity at both distance and near with one pair of glasses.

When you first put on your new bifocals, you will be aware of some unusual sensations: the presence of a dividing line, the blur in the lower part of the glasses as you walk, the “jumping” image as you look from one part of the lens to the other, and the feeling that the floor does not seem to be where it belongs-it looks too close or too far away. But your brain is remarkably adaptive, so you will get used to these sensations and eventually ignore them. Try to accept the idea of wearing bifocals. Concentrate on how well you can now see up close! Here are a few suggestions that will make your adjustment to bifocals easier.

If you have never worn prescription eyeglasses before, you may adjust in small doses by wearing the bifocals only when you need to for close work. You will gradually find yourself able to wear them more and more. But this method only prolongs the time for full adaptation. The quickest adjustment will come by wearing them all the time. Moreover, if you need to wear a distance correction most or all of the time, don’t keep switching back and forth between the bifocals and your old glasses. That only prolongs the adjustment period. Put the bifocals on and leave them on. Try to stop thinking about the bifocals. If the floor looks blurred, don’t keep looking at it. You never used to walk around looking at the floor before you got the bifocals! Ignore the peculiar sensations, “funny” vision, and reflections in the glass. The less attention you pay to them, the sooner you will stop noticing them. If the frame bothers you, have it adjusted by your optical dispenser. Keep in mind that the bifocal reading segment provides sharp vision at a specific distance range from your eyes. An object closer or farther away will be blurred, so you may have to move closer or farther from that object to see it clearly. (If the add is not in the right position for comfortable reading, you may have to tilt your head back too far to see up close, or else have the height of the glasses adjusted or the lenses changed.) Having a difficult or slow time adjusting to bifocals does not mean that a mistake was made. Of course, errors can happen, but 99% of the time it’s simply a matter of adapting to the new glasses. If you have been diligent in trying them for a few weeks and you still think the lenses are not right, have the dispensing optician check them. Then, if problems are not resolved, make an appointment for us to check the measurement of your eyes and the glasses, to determine whether there has been an error in your prescription.

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How to Adjust to Bifocal and Progressive Glasses?

August 17th, 2012

Bifocal and progressive glasses all involve a spell of adjustment to better adapt to the inherent prescription transition in bifocal & progressive glasses. Your eyes may at first get uncomfortable and dizzy when you switch from the top part to lower part. Although the jump line is gone, yet the feeling of abrupt vision jump still persists. The following article will shine a light upon how exactly to adjust to bifocals and progressive glasses.

Bifocal glasses

bifocal glasses

Bifocal glasses are characterized by two different lens power or prescriptions in one lens, the upper part of which features distance vision aiming at myopia while the lower part features near vision dealing with presbyopia or astigmatism. In order to safely and comfortably negotiate the transition period, you will have to follow a few steps:

Step1: Get your bifocal glasses with exact and precise prescription through a certified and eligible pharmacy or glasses vendor.

Step2: Try on your bifocal for a spell of time until you accommodate to the jump of vision. Should discomfort or eye strain occur, you should suspend its use for a while and then resume wearing them and see if any of these symptoms happen again.

Step3: Move the objects you are about to catch sight of closer or farther way so that you can see objects more clearly through your bifocal lenses. (Objects placed too near or too far will influence its viewing experience or cause some blurry state)

Step4: Consult with your optometrist for expert advice, if any of these maladjustments persist. You will be given further information regarding the proper wearing habit.

Progressive glasses

progressive-lens-design

Progressive glasses involve many a prescription in one single lens, which progress from the very top down to the lowest part. When your eyes have difficulty in seeing things clearly close-up or at arm’s length or very distant, it’s high time for you to furnish your face with one pair. But to adjust to progressive glasses needs extra effort and proper instruction, which I will walk you trough.

Step1: Prepare yourself for a sharp change of viewing experience entirely different from what you used to see.

Step2: See through each part of lens and check out how it will affect your vision. Take a book as an experimental subject and put it at different distance away from your eyes, and then see through the lenses how it feels. By and by, you will get used to the separate clarity of each part at each range of distance.

Step3: Walk around, carefully, while wearing the glasses. Keep your eyes straight ahead. Then move your eyes slowly to the outside edges of the glasses and notice that the vision becomes less clear. Bit by bit, by and by, you will find you slowly accommodate to the transition between different lens powers. Congratulations, you are almost there.

Step4: Repeat the abovementioned actions until you feel completely at ease and will switching between different ranges.

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Bifocal Reading Glasses: an Unexpected Fashion Trend

February 17th, 2012

Five years ago, would anyone have considered it possible that the nerdiest of the nerdy glasses in the world, bifocal reading glasses, could someday become a fashion trend? However, in an era when practically nothing is impossible, bifocal reading glasses have for better or worse become the most unexpected fashion trend in the passing couple of years. It is not an exaggeration to say that bifocal reading glasses is catching on when it’s being worn by the sexiest man alive, Brad Pitt, or the most competitive coming-of-age rapper doing his thing on the most popular talent in the world. Those who have switched from their old pairs of bifocal to the everyone-is-talking-about progressives are now switching back for the sake of comfort, convenience and the newly found fashion value.

Gone are the days when a pair of bifocal glasses is laughed at just because they give away the fact that the wearers might be over the age of forty. People don’t like to hang their age around on their face for the world to know and subsequently bifocals are being disliked by many. As an alternative, scientists and opticians developed progressives to replace bifocals and since they don’t have any of that obvious separating lines that’s been scrutinized, progressives are selling pretty well. However, after a period of time, the fever died down a little as people began to learn that it takes a difficult adjusting period to get used to progressives and later that some people just couldn’t get over the adjustment period. Bifocal reading glasses, with their wearers-friendly design and convenient operating method, popped up on people’s mind again. However, some still hesitated on the thought of the unsightly effect these super nerdy glasses might bring to their face and overall image. Then, there comes the storm contributed by the names mentioned above and many more celebrities residing Hollywood which deleted totally and completely the consumption that bifocal glasses are uncool and established firmly in people’s mind that is worn properly, even bifocals could be sexy and attractive.

In an age when almost anything could be purchased electronically, bifocal glasses are no exception to the E-commerce trend. Firmoo.com, the world’s most professional eyewear vendor online has the most complete stock of bifocal reading glasses and their user’s friendly page and purchasing procedure will help you land your favorite pair within just no time.

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Make Reading Fun and Healthy with Bifocal Reading Glasses

February 3rd, 2012

The overheated popularity of bifocal reading glasses amply demonstrates their distinctive peculiarity and versatility in providing the dual correction for near vision and distance vision. Equipped with such dual power, bifocal reading glasses can justify themselves to be called the genuine helper of myopia and presbyopia sufferers.

Bifocal reading glasses, in such a technological era, are becoming an increasingly useful assistant when it comes to the reading difficulty of victims of myopia and presbyopia at the same time. As implied by the name, bifocal is meant for embedding two distinctive optical powers into one single lens, hence the dual near vision correction and distance one. When you want to descry the objects in the far distance, you can focus your eyes upon the upper part of lenses, aiming directly at your myopia. And vice versa, the presbyopia problem will be duly resolved if you shift your focus to the bottom part. In the light of bifocal reading glasses, they do an excellent job in dealing with the shift focus from reading difficulty to viewing inconsistency. Great news is that the present-day bifocal reading glasses are free from the image jump caused by the conspicuous seam between the two optical powers, thus making for smooth and fluid viewing experience. For those having penchant for reading newspapers or books, bifocal reading glasses come as a godsend.

Bifocal reading glasses are no longer as dull and humdrum as they used to be. They nowadays come in different styles, shapes and colors, always managing to take on a refreshing look. As to the style of such kind of glasses, lying open to your selection are various kinds of styles, retro eyeglasses like Old Grannies’, those cool horn rimmed eyeglasses, one of which will surely satisfy your aesthetical wish. FYI, cheap glasses online is a pretty good channel where you can get access to both good quality and inexpensive glasses. Firmoo, as the undoubted leader of online glasses retailers, is exerting its influence to the best of its ability to offer the best of all glasses to its loyal customers. Nothing but the capital quality and matchless price here at Firmoo.

Bifocal reading glasses is indeed a veritable boon for book worms. If ill luck would have it that you are made victim of myopia and presbyopia at the same time, to admit no doubt, bifocal reading glasses will be the best edged weapon you can lay your hands on. What are you waiting for? Grace your face with a pair of bifocal reading glasses and enjoy an unencumbered reading experience.

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Weigh The Pros And Cons Of Bifocal Eyeglasses

December 6th, 2011

The very mention of bifocal eyeglasses brings to mind many debates and discussions. Opinions and perspectives on the product vary with different groups of people, sometimes to the extent of exact opposition. While some are highly and quite reasonably on their turns in favor of bifocal eyeglasses, others might be totally against it. The extremely polarized views on bifocal eyeglasses give a glimpse of a product combining many merits celebrated by followers and just as many defects scrutinized by its critics. Like two sides of the same coin, the pros and cons of bifocal eyeglasses must be taken into serious consideration when one is deciding whether or not to buy.



In comparison to single vision eyeglasses, the biggest advantage bifocals have is convenience. It saves those who suffer from the double harassment of presbyopia and myopia from the nettling troubles of switching between sets of glasses. By blending two different powers into the same lens, bifocal eyeglasses allow the wearer to see things at distance and things up-close by simply tilting their eyes slightly to look through the respective parts of lenses. Such ingenious design for many people is enough to ignore any drawbacks these glasses may otherwise have, since it spares them from their long-lived headaches once and for all.

For others, however, glasses featuring two powers isn’t enough to cover the many defects, among the most commonly complained of which the notorious image jump is. Because the prescription powers on two sides of the separating line are sharply different, wearers often experienced a sudden jump or distortion of image when their vision moves across the line. Such problem is unavoidable with bifocals or trifocals, what have you, but can be spared with progressive lenses. Featuring a gradient of powers progressing from the top to the bottom of lenses, progressive lenses do give more of a natural view as is advertised. However, that doesn’t mean progressive lenses are the ultimate and perfect alternative to bifocals. Wearers of such lenses often find huge areas of blurred vision at two sides of the lenses, which end up offending many and sending them back to bifocals. It seems that we still need to await the ideal solution that solves all problems and comes with not the slightest drawback. As for the time being, we might as well weigh the pros and cons and our particular conditions and make decisions accordingly.

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Modern Bifocal Reading Glasses: Not Your Same Old Heavy Glasses Any More

November 24th, 2011

As a traditional solution to the dilemma of having difficulties seeing things both close up and far off, bifocal reading glasses have come a long way. Once, it was the only way to deal with the nettling troubles triggered by having to constantly switch between different eyeglasses. Now, however, with the emerging and increasing popularity of contacts and optical surgeries, bifocals seem to have lost most of its followers. Many people had long been complaining about the clumsiness and heaviness of their old bifocal reading glasses, so once an alternative is available, they immediately took it, regardless of their lacking of real advantages. It is only after they are over the novelty of the new stuff and begin to find them with as many, if not more, problems as bifocal reading glasses, did they look back and take one more chance on their old problems. And this time around, bifocal reading glasses, with the new varieties and variants provided by the rapidly developing optical techniques and technology, sure won’t let them down.

As is widely recognized, bifocal lenses were invented by Benjamin Franklin, one of the founding fathers of the United States. Besides drafted and issued the constitutions for one of the strongest countries now in the world, Benjamin was also a frequent inventor. At the time, he was experiencing what is familiar to thousands upon thousands today, a combination of myopia and presbyopia. The custom approach to solve such problem at the time was to carry multiple pairs of eyeglasses for varying vision ranges and put on a certain pair when the corresponding vision correction is needed. A great man like Mr. Franklin was never going to make peace with the unsatisfying current solution. He studies the science behind eyeglasses and ingeniously, with immense imagination and creativity, blended two pieces of lenses of different powers into the same lens, and the rest goes the history.

bifocal 2

Bifocal lenses were thus invented, yet in retrospect, the ones made in Franklin’s age did seem a little bit clumsy. Because the lenses consists of two different parts, they were usually larger than single vision ones. Besides, in an age when most lenses were made of glass, the weight of such specs can only be added. The visible line separating different powers was a major issue as well. Many people don’t like the idea of having their age written right on their faces. All the above-mentioned drawbacks have been causing bifocal reading glasses to wade through their dark days and then later solved one by one alongside the unprecedented developments and achievements with materials, techniques. For instance, the use of lightweight material such as Trivex, polycarbonate and CR-39 have not only made bifocal reading glasses lighter than ever but also given them a chance to be more versatile in styles, since lighter lenses are compatible to a large number of frames. You could even have your bifocal readers semi-rimmed to have that classy and business-minded look you’ve been long craving for. For those who have been sick and tired of the telltale lines on bifocal glasses, progressive lenses may be of their interest. By blending practically innumerable powers into the same lens, progressives, also known as no-line bifocals, provide the same convenience as bifocals while having the visible lines rid off at the same time.


All and all, those of you who still dwell on the old impressions of bifocal reading glasses need to come out and give them a new chance. Some of you may still not like them but who knows, maybe some other will stick to them for the rest of their lives.


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Bifocal Glasses: An All-Rounder That Is Hard to Come By

November 23rd, 2011

In full swing is the heated debate of bifocal glasses being the ultimate savior of people’s eyesight. True enough, we opt for bifocal glasses instead of other alternatives on account of three reasons. An overall series of comparison and contrast conducted in such respect will bring home to you the merits of bifocal glasses.

Bifocal glasses Vs. Single vision glasses
With the passage of time, men at middle age are liable to subject to the combined harassment of myopia and presbyopia. The singly-functioned eyeglasses with either single distance vision prescription or near vision prescription can no longer satisfy your increasing focusing needs for all kinds of distance view. Owing to such a fatal defect, single vision glasses are destined to fail to carry out people’s wish to accommodate their eyes to various viewing distance with conspicuous clarity. Nevertheless, bifocal glasses, instead, are equipped with two distinct optical powers in one single lens, that is, the distant vision prescription on the upper portion of the lens and the near vision prescription on the lower part. With such two different prescriptions in one lens, those who suffer from myopia and presbyopia at the same time will be able to see things in the far distance clearly through the upper part, and read small printed materials or books with perfect ease and clarity.

Bifocal glasses Vs. Progressive eyeglasses
Progressive glasses, other named multifocal eyeglasses, are eyeglasses that have a gradient of optical powers embedded in the lenses which enables their wearers to see things clearly in different viewing distance. Versatile as progressive eyeglasses may be, they at times offer more than we wanted. If your eyesight is not as bad as what progressive glasses demand, odds are that you might have you vision health impaired by wearing such glasses. Moreover, the merit of smooth image transition brandished by progressive glasses has now been successfully applied to the lenses of bifocal glasses. With bifocal glasses on our faces, we are spared the ordeal of image jump. Besides, a pair of bifocal eyeglasses is on the whole much cheaper than progressive ones. That’s the fetching news to some tight-budgeted consumers.

It is no exaggeration to claim that bifocal glasses will conducive to your vision health to the utmost, if only you obtain the right one that will suit you most. You, on the receiving end, will absolutely grow fond of them once you have benefited from them.

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Bifocal Safety Glasses Benefit You Both At Home And At Work

November 15th, 2011

Bifocal safety glasses , as self-explanatory by the name, are safety glasses with bifocal lenses. Such glasses combine the merits of both bifocal glasses and safety eyewear, answering the needs of many. On the safety front, these glasses are usually of lenses made with shatter-proof materials, such as polycarbonate, which make the glasses more durable and protective. In the meantime, the bifocal aspects of them provide the swift and smooth shift between close up vision and distance vision that suit the vision condition of many people. While most utility of bifocal safety glasses are for the safety and health of many special duty carriers that operate in unusual working environments, the functionality and usage of such glasses do stretch beyond the work place and into other fields, like many activities that people do at the comfort of their home.

Bifocal safety glasses

For people who work in the industries that have the risk of being hit by flying debris or falling objects, safety glasses are an undeniable necessity. If he or she who works in such working environment also suffer from more than one refractive error, which require more than a pair of single vision glasses to cure, bifocal safety glasses come in handy. These glasses not only protect the wearers’ precious eyes from the hidden dangers of being damaged, they also give them the precise correction that is needed to guide them through their complex and sometimes minute work they are engaging in. Some industries may not have flying debris or things alike, but involve instruments or tools that could trigger radiation or biological hazards. For multi-vision-error sufferers working in such environments, bifocal safety glasses are the best choice out there, as well.

Bifocal safety glasses

Home activities may be less associated with safety issue, yet dangers always come when least expected. Lathes, sanders, saws and other power tools may lead to serious damage to our eyes when they are in motion. As a result, if you use the listed tools, even in the seemingly safe environment of your home, you need protection from bifocal safety glasses, just as much as those who work at hazardous workplaces.

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Single Vs. Bifocal Eyeglasses— No winner, No loser, Only Fittest Comes Best

November 1st, 2011

In the battle of single vs. bifocal eyeglass, there is, after all, no exact winner at all. What is of paramount importance is to get fully acquainted with their attributes and have a fair and sound knowledge of how they work. Equally important is to select a pair which meets your requirement for vision correction to the utmost.



Single eyeglasses can be defined as a kind of prescription eyeglasses equipped with single corrective power throughout the whole lenses. Put simply, if you are singularly farsighted or myopic, you are prescribed to wear such eyeglasses with single optical power. The lenses can have matching prescriptions or different ones. These can consist of a plus or minus prescription or even no prescription in one eye, while the other has either a plus or a minus prescription, or both. It is very conducive to those who suffer from vision problem and thus are not able to see things clearly, be it in proximity or in long distance. When you read books, work or do exercises, such single eyeglasses can be exceptionally helpful.


More often than not, however, some people are afflicted with presbyopia and myopia and/or astigmatism at one and the same time, and an ordinary pair of single vision eyeglasses can’t suffice to meet their urgent need to see things with more clarity. At this point, a pair of bifocal eyeglasses will do the best to their satisfaction. Unlike single vision eyeglasses, bifocal eyeglasses are such as can have two distinct corrective power incorporated into one single lens. And such bifocal eyeglasses prove immensely useful to those with presbyopia and myopia at the same time, owing to the fact that the upper portion of bifocal lens enables you to see things more clearly in distance, i.e. Distance vision, while the bottom part is endowed with close range focusing, especially helpful for Presbyopia correction. Bifocal eyeglasses aim at strike a balance between near vision and distant vision, and by so far, it has done so good a job. The traditional defect known as image jump brought about by the abrupt change of prescription power, now has been improved by means of providing more smooth and seamless lens. We call almost call it no-line bifocal glasses.


Having expounded so much of my view on single and bifocal eyeglasses, you might faintly grasp the quintessence of both glasses. So next time when you are inquired of about who excel whom, you can just tell them no such champion exist between them. Only when they suit your needs can they be justified as winner in your own view.

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Spring Hinge Bifocal Eyeglasses: Function, Convenience and Durability All In One

October 31st, 2011

By category, spring hinge bifocal eyeglasses are a type of multi vision specs, as compared to single vision eyeglasses. The intrinsic value of such glasses is their ability to allow users to have freely changeable prescription powers in accordance to their specific need. This functional edge over single vision specs truly hits home and has subsequently won over millions of glasses wearers who need correction for not only one single refractive error but also two and sometimes even three. Bifocals, as a type of multi vision specs, are specially designed and made for those who need separate powers for seeing things at a distance and things up close. Brought about by the long unsatisfied need to cure duo-vision-errors once and for all and the increasingly rapid development of technology and optical techniques, bifocal eyeglasses combine two different prescription powers on the very same lenses, one for the distant vision and another for the up close one, providing an extraordinary functional value.


What separate spring hinge bifocal eyeglasses from your regular ordinary ones are, of course, the spring hinges. In case you are not familiar with such devices, let’s first imagine a scenario. You are just out the door, hurrying to catch the bus. To get a better look at the road and your surroundings, you take out your specs and try to put them on. Since your left hand is caring all sorts of other stuff, you try to put your specs on with one hand, but the loose temples never seem to stand in place when you need them to and after several attempts, you have to desperate seek help with the other hand.

Such troublesome and nettling experience must be familiar to many. However, to get rid of it is not as hard as you might have thought. All you need to do is to get your specs spring hinged. The springs embedded at the meeting point of the frames and temples will push the temples right at place, erect and firm, at the lightest motion you give them. Such convenience is only shadowed by their enormous durability. How so? Well, as it proves to be, spring hinges are extremely easy to repair. Whether you tend to get them fixed your own at a manual or send them to a professional and have them repaired there, there a huge chance that you will be paying much less than you otherwise would have to pay, buying a brand new pair. So, not only are spring hinge bifocal eyeglasses convenient as hell, they are super durable, to boot.

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