Sunglasses and eyewear retail spans fashion sunglasses, sport and performance eyewear, and optical frames. The category is subject to specific safety regulations — sunglasses must meet EN ISO 12312-1 and carry CE marking to be legally sold in the UK. Frame fit specifications (lens width, bridge, temple length) are essential for customer satisfaction. Online eyewear retail has grown significantly and optical retailers increasingly offer online prescription lens services. Migrating to Shopify suits eyewear retail, with attention to regulatory compliance and frame specification data.

Product categories

Fashion sunglasses: Designer and own-brand. Shape, colour, material.
Sport sunglasses: Wraparound fit, impact-resistant lenses, interchangeable lenses.
Optical frames: For prescription glazing. Sold as frames only.
Reading glasses: Ready-made magnifying glasses. Strength in dioptres.
Blue light blocking glasses: Screen use. Regulatory claim considerations.
Replacement lenses: Prescription and non-prescription replacement lens fitting.
Eyewear accessories: Cases, cleaning cloths, lens spray, retainers, lens wipes.

UK sunglasses safety regulations

Sunglasses sold in the UK must comply with EN ISO 12312-1:2013 (Optics and photonics — Eye and face protection — Sunglasses and related eyewear):

CE marking: mandatory on all sunglasses placed on the UK/EU market — declaration of conformity required
UV protection: sunglasses must block UV radiation — UV400 (blocks all light below 400nm) is the standard to look for; note on product
Lens category: sunglasses are categorised by light transmission (Category 0 = clear, Category 4 = very dark) — Category 3 is typical for sunglasses; Category 4 is not for driving
Impact resistance: lenses must meet minimum impact resistance — note if lenses are polycarbonate (impact-resistant) vs glass or standard plastic
Driving restriction: Category 4 lenses must carry "not suitable for driving or road use" — note clearly

product.metafields.eyewear.uv_protection = "UV400"
product.metafields.eyewear.lens_category = "3"                 // 0-4 scale
product.metafields.eyewear.ce_marked = "true"
product.metafields.eyewear.lens_material = "Polycarbonate / TAC / Glass / Nylon"
product.metafields.eyewear.lens_coating = "Anti-reflective / Mirror / Polarised"
product.metafields.eyewear.polarised = "true"
product.metafields.eyewear.suitable_for_driving = "true"

Frame fit specifications

Frame fit is the primary predictor of customer satisfaction — must be stated accurately:

Lens width: width of each lens in mm (e.g. 52mm)
Bridge width: distance between lenses across nose bridge in mm (e.g. 18mm)
Temple length: length of the arm from hinge to tip in mm (e.g. 140mm)
Total frame width: tip-to-tip measurement across both lenses and bridge — most useful for comparing fit to existing frames
Frame size notation: typically written as "52-18-140" (lens-bridge-temple) — note in this format on all frames
Face shape guide: content page matching frame shapes (aviator, round, square, cat eye) to face shapes — reduces return rate

product.metafields.eyewear.lens_width_mm = "52"
product.metafields.eyewear.bridge_mm = "18"
product.metafields.eyewear.temple_mm = "140"
product.metafields.eyewear.frame_width_mm = "138"
product.metafields.eyewear.frame_shape = "Aviator / Round / Square / Cat eye / Oval"
product.metafields.eyewear.frame_material = "Acetate / Metal / TR90 / Titanium"

Prescription lens compatibility

Optical frames and some sunglasses are sold for prescription glazing:

Prescription-ready sunglasses: note if frame is suitable for prescription lens fitting — frame type and lens shape affect glazing compatibility
Rx (prescription) range: optical frames sold without lenses — note prescription range supported (sphere, cylinder) if known from manufacturer
Online prescription service: some eyewear retailers offer to fit prescription lenses — requires ABDO-registered optician partnership; follow GOC (General Optical Council) regulations
Varifocal compatibility: note if frame is suitable for varifocal/progressive lenses — minimum lens height typically 30mm required

Blue light glasses claim regulation

Blue light blocking glasses are popular but claims must be substantiated:

Advertising Standards Authority (ASA): claims that blue light glasses reduce eye strain, improve sleep, or protect eye health are unsubstantiated by current clinical evidence — ASA may challenge such claims
Use evidence-based language: "designed to filter high-energy visible blue light" rather than "proven to reduce eye strain"
Lens coating claims: the extent of blue light filtering varies by product — note percentage of blue light filtered where verified by manufacturer

Post-migration checklist for eyewear stores

Safety compliance: CE marking, UV400, lens category on all sunglasses
Driving restriction: Category 4 lenses clearly marked as not for driving
Frame specifications: lens width, bridge, and temple length in mm-bridge-temple format on all frames
Polarised: noted where applicable; note polarised is not the same as UV protection
Prescription compatibility: Rx-ready status noted on optical frames and compatible sunglasses
Blue light glasses: evidence-based language only; no unsubstantiated health claims

Migrating a sunglasses and eyewear store from WooCommerce to Shopify (2026)