What is Peak Vision?

Hey Bähko Family! 


We are all about spreading the word about lens technology and eye protection, so we are creating this blog so people can access good quality data, straight from the source!


This episode is about polarization. In today's day and age we hear this term thrown around and all types of conversations and descriptions. But in the context of good quality sunglasses, what is it? Why is it better? Why is everybody talking about seeing fish? 


Polarization is a filter inside a lens that only lets light through in one direction. Think of it like the mini blinds at your grandmother's house. Some of the light from outside comes through and some of the light is blocked from entering. Those blinds can be more open or more shut and so can the polarization on a lens.


The more light that is blocked, the less light comes through and the darker your view is. Finding the sweet spot is part of the magic in a good quality lens. There are many factors that contribute but VLT is certainly one of the important ones when it comes to your user experience.


Visual Light Transmission

VLT is the amount of light permitted to transmit through the lens and in to your eye. This measurement is represented by a percentage. For instance, a 17% VLT lens blocks 83% of visual light.A 42% VLT lens blocks 58% of visual light.


Many people mistake lens darkness with eye protection. It is understandable to assume this, but it isn't true. The most important element of a sun lens is the UV protection. 100% UV protection lenses are mandatory requirement for all outdoor use. This UV protection provides a medical purpose that blocks the harmful rays from the Sun. The harmful rays from the Sun represent a spectrum of light just at the edge of what we can see, falling into the blue/violet part of the prism spectrum. It is of utmost important to have this protection whenever we are outside, enjoying nature, sport, exercise and work.

Lack of use of this critical medical device leads to retinal sun scarring and eyesight degradation. I have personally experienced both of these and the experience has served as my inspiration for founding Bähko Eyewear. I consider education to be one of my critical roles in the business.

The polarization aspect of the lens serves a practical purpose which is to cut glare. Only allowing some of the light through has the resultant effect of crisper clearer vision, less glare and more clarity. This aspect dramatically increases functionality and enjoyment for the wearer. Being able to see through the glimmer on the surface of the water to be able to spot the fish or being able to see the road surface and other vehicles while driving into full glare sun are a couple of good examples of how a polarized lens can improve your experience and all your outdoor activities.

The lens, color and darkness of the lens do not contribute to eye protection, but definitely contribute tremendously to user experience. Many people are particularly sensitive to light conditions, myself included. Very dark lenses will certainly cut out a lot of light and glare, but for me it also cuts out a lot of detail I need. Lots of people prefer a darker lens and there is no right or wrong answer when it comes to lens darkness or color preference. However, there are just as many, if not more people who prefer a lighter lens color and darkness. For instance, amber lenses are by far the most popular lens color we carry. This is for many reasons. One of those reasons is contrast. An amber lens falls in a spectrum of light filter that increases contrast. This has the result of making details. Sharper and colors pop. Many people have told me they feel like they don't need their regular glasses on while wearing a high contrast lens. Another good use case for an amber lens is color blindness. I have had some very excited customers because of the excellent results they have had for their red-green color blindness. One customer I had came to me having just spent $700 on a pair of color blind specific correction glasses. He told me that my peak vision polarized amber lenses worked far better than those and they cost less than 1/12 of the price! He's obviously part of the Bähko family now. :-)


Another high contrast lens color is lavender/pink. I have found that many golfers prefer this lens color because it makes the greens and green colors more detailed and precise. Finding the ball, tracking the ball and reading your greens are all great benefits for any golfer.


Yellow lenses are another great use case low and variable light. A yellow lens can be used for night driving, dappled light and shadow, and variable light conditions.

A yellow lens is another high contrast lens color that make details pop, however, most people will not want to use it in full glare sun. Yellow is the lightest color lens that can also be polarized. That is to say the highest VLT lens that can be polarized. This is a category 2 lens as opposed to most sunglasses which are cat 3. So you are still getting 100% UV protection and you're cutting some glare with a light polarization. But it should be noted that the lighter your lens color is the less light can be removed with polarization, making the impact of the polarization less intense.

This it's so important to find the sweet spot when it comes to UV protection, polarization and lens color. It is very subjective and everyone's eyes are different. This is why Bähko Eyewear offers a variety of lens colors, VLTs and mirror lens treatments.

I didn't talk about mirror lens treatments in this episode because I'm saving that for its own blog post.

 I hope you have enjoyed reading about our lens technology and we'll see you in the next one!


Bähko EyewearB

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