Eye safety & viewers

Eye safety & viewers: eclipse guides from Helioclipse — practical, accurate, and ready for the August 12, 2026 total solar eclipse.

man wearing helioclipse glasses close up looking at solar eclipse — people viewing the eclipse with protective glasses

Viewer safety

Oct 19, 2026

Fake and low-quality eclipse glasses: how to sanity-check what you are about to trust

An ISO mark is not proof. Learn how to check eclipse glasses, trace their source, spot physical and labeling red flags, and avoid overtrusting home tests.

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Optical safety

Oct 18, 2026

Binoculars and telescopes during a solar eclipse: where filters belong (and where they do not)

A solar filter belongs securely over the Sun-facing aperture—not at the eyepiece. Learn how to use binoculars and telescopes safely during an eclipse.

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crowd of students watching eclipse with glasses school field — people viewing the eclipse with protective glasses

Indirect viewing

Oct 17, 2026

Pinhole projection and indirect viewing: safe ways to share the eclipse with a crowd

Turn a wall, box or sheet of card into a crowd-friendly eclipse display. Learn how pinhole projection works, how to organize a safe group activity and why cameras and binoculars require different precautions.

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Eye safety

Oct 14, 2026

Why staring at the Sun without protection is never “just a quick look”

Solar retinopathy can occur without pain or an immediate warning. Learn what direct sunlight does to the retina, which symptoms need professional attention, and how to view an eclipse safely.

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Eclipse safety

Oct 1, 2026

Unsafe shortcuts that keep showing up before eclipses (and what to do instead)

Dark sunglasses, smoked glass and improvised filters are not safe ways to watch an eclipse. Here is what to reject—and what to use instead.

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family outdoor picnic watching solar eclipse glasses front yard — people viewing the eclipse with protective glasses

Viewer safety

Sep 4, 2026

ISO 12312-2 and eclipse viewers: what the standard means for your family

ISO 12312-2 is more than a number printed on eclipse glasses. Learn what the standard covers, what it cannot prove by itself, and how to check viewers before your family looks at the Sun.

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Eye safety

Sep 3, 2026

When glasses on, when glasses off: eclipse phases explained for first-time viewers

Learn exactly when eclipse viewers must stay on, when they may come off during totality, and why partial and annular eclipses have no glasses-off moment.

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woman close up selfie wearing solar eclipse glasses sunlight — people viewing the eclipse with protective glasses

Safety online

Aug 28, 2026

Viral hacks and affiliate links: how eclipse misinformation travels faster than the Moon’s shadow

Unsafe eclipse advice can look polished, popular and persuasive. Learn to spot improvised filters, misleading ISO claims, risky camera tricks and affiliate links before anyone looks at the Sun.

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Solar Eclipse: How To Watch the Moon Block Out the Sun Safely - Newsweek

Filter myths

Jul 28, 2026

Welding glass, sunglasses stacks, and Mylar myths: why improvised filters fail modern safety tests

Dark-looking materials are not automatically safe solar filters. Learn why stacked sunglasses, improvised film, and uncertain welding filters cannot replace a traceable ISO 12312-2 solar viewer.

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Millions gather to celebrate solar eclipse along path of totality

Eye symptoms

Jun 1, 2026

After the eclipse: when a 'weird feeling' in your vision deserves medical attention

Most post-eclipse eye worries are not emergencies, but some vision changes should not be brushed off. Here’s how to tell the difference, what symptoms matter, and when to call an eye doctor promptly.

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