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Why Computer Glasses?
It's all in the details:
Blue Light Blocking: 90%
UV Protection:100%
Lens Type: Crystal Clear CR:39
Material: Custom hand made cellulose acetate and stainless steel.
Frame: Akulon-coated German screws for proper tension and durability.
About Portola Frames:
With a bold browline and generous width, our Portola frames are great around the office or a night on the town.
Shape: Rectangular.
Lens Color: Crystal Clear.
Fit: Medium.
Design: Engineered for optimal balance, comfort, and durability.
Our Portola Frames are considered 'Medium Fit' and are a good choice if you're unsure which size you are.
Frame Measurements: 54-18-145
Glasses measurements are generally written like this: 50-15-135. The first measurement is the eye size (width of the lenses), the second is the bridge size (distance between the lenses), and the third is the temple size.
We reccomend checking a pair of well fitting sunglasses for these numbers which are typically printed inside one of the arms. The most important measurement to match is the first which helps determine the width of the frame.
"With the use of tablets, TVs, computer screens and smart phones, and there's no doubt our exposure to blue-violet light is on the increase. This cumulative and constant exposure to the blue-violet light is going to accumulate over time and has the potential to cause damage to the retinal cells, which is going to slowly lead to retinal cell death and can in turn lead to age related macular degeneration."
- Review of Optometry
Customer Portola Photos
Customer Testimonial Video
About Portola:San Francisco is a city of neighborhoods - each one of them like a small town, with a main street lined with restaurants, shops and bank branches. There is a firehouse, a library, a couple of bars, a coffeehouse or two, some churches and a Muni bus line.
The Portola is tucked away in the southeastern corner of the city, between Bernal Heights and the Bayview. Thousands of cars and trucks roar right by the Portola every day on Bayshore Freeway. It's just off to the right on the way out of town.
"Everything out here is a secret," says Kate Connell, a librarian at City College who lives in the Portola and loves it. The district is part of the working-class rim of the city that geographer and historian Gray Brechin calls "San Francisco incognito."