Solar Eclipse Glasses Safety: What ISO 12312-2 Means

The short answer: safe solar eclipse viewing requires eyewear tested to the ISO 12312-2 filter standard, not ordinary sunglasses at any darkness. Solar Rollens (#70201S) is declared to ISO 12312-2:2015 under Rollens's EC Declaration of Conformity, PPE Category 1, and is sold in bulk to practices, schools, and organizations distributing eclipse eyewear to groups.

Why ordinary sunglasses are not enough

Looking directly at the sun, even during a partial eclipse, can cause solar retinopathy: damage to the retina from concentrated light and ultraviolet/infrared exposure. Ordinary sunglasses, no matter how dark, do not block enough of that light to make direct viewing safe. Safe solar viewing requires eyewear specifically designed and tested for that purpose.

What the ISO 12312-2 standard covers

ISO 12312-2:2015 is the international standard for filters used in direct viewing of the sun, including solar eclipses. It sets limits on how much visible, ultraviolet, and infrared light a filter may transmit. Eyewear declared to this standard has been tested against those limits. Rollens's EC Declaration of Conformity documents Solar Rollens against this standard under PPE Category 1 (EU Regulation 2016/425).

Buying in bulk for group distribution

Organizations distributing eclipse eyewear to a group, a school, a clinic waiting room, a public viewing event, need enough pairs on hand before the event, not scrambling once demand spikes. Solar Rollens ships in bulk with a minimum order of 5 units; see the product page for current pricing and ordering.

Checking eyewear before an event

Before distributing or using solar eclipse eyewear, confirm it carries an ISO 12312-2 designation from the manufacturer and inspect each pair for scratches, punctures, or tears in the filter material; damaged filters should not be used regardless of the original certification.

For general post-mydriatic and dental protective eyewear, see Eye Care and Dental Care.