Though multifocal lenses usually are prescribed for adults over age 40 to compensate for presbyopia, in some cases bifocals are prescribed for children and young adults who have eye teaming or focusing problems that cause eye strain when reading. Varifocals are the most advanced lenses that you can buy. The varifocals we offer are the latest freeform lenses Bifocals and trifocals have visible lines, but the line in a round-seg bifocal tends to be less noticeable than the lines in flat-top and executive styles. Other types of sunglasses are available in bifocal wearers that are not photochromic. While they may not have all the features of the DriveWear lenses, regular bifocal sunglasses are more affordable and accessible to most consumers. Wrap Up While bifocals help you see near and far objects clearly, there are benefits and disadvantages you must also keep in mind, including: Pros

In addition to the eye exam, frames, and prescription, special lens treatments can add to the cost of bifocal lenses, including:There are a few things you need to know about bifocals and driving. Making the switch from single-vision lenses to bifocals takes time. The measurements must be precise, and your eyes will not adjust immediately. However, bifocals are great for driving if your Add value is not higher than 1.5D.

The bifocal is meant to provide vision correction for close-up objects that are blurry due to your eye’s inability to focus. If the bifocal portion of the lens is positioned up too high, this prescription will bleed into the distance line of sight. This could cause blurry vision where you had none before, making it difficult or impossible to see the road ahead. You usually begin to notice these symptoms when you reach your early- to mid-forties. At that age, you have a lot of driving left in them, and it is scary when you cannot see everything right in front of you. It is important to understand presbyopia symptoms to understand how they affect driving and how bifocals can help. Some symptoms are:Yellow-tinted lenses can also increase vision contrast, making it easier to see pedestrians and traffic. However, this effect is more pronounced during the day and provides little vision improvement at night. Transitions ® lenses filter at least 20% of blue-violet light indoors & over 87% of blue-violet light outdoors except Transitions ® Signature ® lenses style colours which filter over 75% outdoors. Blue-violet light is between 400 and 455nm as stated by ISO TR20772-2018.