vision Understanding the Process, Part 4: Sitting down with your Optician Understanding the Process, Part 3: the Eye Examination Understanding the Process, Part 2: Preliminary Testing Choosing Glasses Part 5: Lens Technologies Choosing New Glasses part 4: Lens Coatings and Options Choosing New Glasses Part 3: Some Frame Specifics FRAME BRAND FEATURE: Etnia Barcelona Blue Light filters: Do we need them?