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Frame sizes, lens coatings, prescriptions and UV protection explained in plain English, so you can buy eyewear online with confidence.
Eyeglasses
Prescription glasses, frames, lens types and coatings.
How to read the three numbers on glasses frames (lens width, bridge and temple length), find your size from a pair you own, and choose frames for your face.
What every number on a glasses prescription means: OD and OS, SPH, CYL, AXIS, ADD, prism and PD, with examples and tips for ordering glasses online.
Which eyeglass lens coatings and options are worth it: anti-reflective, scratch-resistant, UV protection, blue light filtering, photochromic and high-index lenses.
How progressive, bifocal and reading lenses differ, who each suits, how long progressives take to adjust to, and what to check when ordering them.
Sunglasses
Sunglasses for everyday, sport and driving, including prescription sunglasses.
The difference between UV protection and polarization, what UV400 and lens categories mean, and how to choose sunglasses for driving, water and everyday wear.
How to find your face shape and choose sunglasses that suit it, plus sizing, fit and style tips for aviators, wayfarer-style, round and oversized frames.
Contact lenses
Daily, two-week and monthly contact lenses, and lens care.
Accessories
Cases, cleaning kits, straps, readers and computer glasses.