Are you shopping for eyeglasses? During your search for a pair of glasses you might encounter unfamiliar terms like bifocals and progressive lenses. This may be very confusing especially for first timers, but understanding the difference between these two will allow you to better pick which one is best suited for you.
Aren’t all glasses the same?
Aside from the prescription of the glasses given by your optometrist, you still have the option between bifocals and progressive lenses. The lens of your eyeglass is actually divided in order to anticipate and suit your vision needs. Having bad vision does not necessarily mean that your eyes are blurry all the time. Some people would only have difficulties when looking at near things, while others struggle with far ranges, and of course there is the intermediate vision which we mostly use in our daily lives.
Bifocal glasses are specially made to address at least two of these problems. The top part of your lens may be for long distance vision (driving a car), while the lower part can be used to assist with near ranges (reading, or texting). Before, bifocals were the only choice, but modern technology has allowed progressive glasses to be made. In a nutshell, progressive lenses address all three ranges of vision and are best suited for those whose eyesight is bad no matter the range.
Advantage and Disadvantages:
The problem with bifocal glasses is that your vision literally experiences a jump once you cross the divide between the two ranges. For example, looking down while reading may make the text very readable, but once your eyes drift upwards, only the far objects become clear. This can take some getting used to for many people, and they often get irritated if they look at things from the wrong vision range. Progressive glasses make the adjustment easier, since your eyes go through all three vision ranges; however some people don’t necessarily need progressive lenses since they mostly have only one vision range problem.
Which to Buy:
There is actually no right or wrong choice. Try wearing both and see which one you’re more comfortable with. Take note, though, that some people may require progressive lenses especially if their vision is generally bad. Before making a purchase, you should seek a professional eye expert first like Penn Moody from Moody Eyes Downtown in Indianapolis, and ask for a suggestion on the right type of glasses.
The Difference Between Bifocals and Progressives, 39dollarglasses.com
Difference between no-line bifocals, progressive bifocals, and trifocals, eyesmart.org