How to watch Spain's solar eclipse without damaging your eyes

EuroNews · 🇫🇷 public France · Aug 05, 2026 · 477 words · By Javier Iniguez De Onzono

Scientific Standards Public Health and Safety

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What to know about Scientific Standards

Only specifically certified filters let just 0.00032% of visible sunlight through and protect people watching this once-in-a-century event from permanent retinal damage.

Claims checked 13

Techniques found 1

Topics 2

Coverage spectrum

Coverage gap: Low Left coverage

Left11%

Center78%

Right11%

9 sources compared across this story cluster. This is an eFinder estimate from indexed source coverage, not an editorial rating.

What happened

Only specifically certified filters let just 0.00032% of visible sunlight through and protect people watching this once-in-a-century event from permanent retinal damage.

Why it matters

Remember this figure for the eclipse that will cross the Iberian Peninsula on 12 August.

Common ground

Keeping that date in mind, the ISO number (International Organization for Standardization) of the special glasses that must be used to view this once-in-a-century phenomenon safely should be easy to remember: 12312-2.

Perspective signals

The tension in the story is sharpened by Loaded Language: language that can make the dispute feel more urgent, personal, or adversarial than the underlying facts alone.

Follow-up questions

What new context would change how readers understand this Scientific Standards story?
What evidence would most clearly confirm or weaken the claim that The Ministry and ONCE are going to distribute two million certified safety glasses free of charge?
How does this story connect Scientific Standards with Public Health and Safety over the next few days?

open_in_new Read the original article: https://www.euronews.com/next/2026/08/05/safe-glasses-for-spains-total-eclipse-w…

psychologyPropaganda Techniques Detected

eFinder identified 1 propaganda technique in this article. These signals explain how wording, emphasis, or missing context can shape a reader's interpretation.

warning

Loaded Language 70% confidence

Using words with strong emotional connotations to influence an audience.

Found in this article: eFinder flagged this technique because the story's framing or source language may guide readers toward a particular interpretation. Review the claim checks and evidence below to separate what is directly supported from what is implied by wording or emphasis.

Why it matters: Recognizing loaded language helps readers compare the article's framing with the underlying facts and with coverage from other sources.

fact_checkClaims Checked

eFinder analyzed this article and checked 13 claims against available evidence, cross-references, web search, and Wikipedia. Here is what the fact-checking layer found.

check_circle Corroborated 4

verified Verified 4

schedule Pending 3

info Single Source 2

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Claim 1: “The Ministry and ONCE are going to distribute two million certified safety glasses free of charge”

PENDING

This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.

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Claim 2: “ultraviolet radiation will damage the eye's photoreceptors (cones and rods), while infrared energy will produce a direct thermal effect on the retina, causing solar retinopathy”

CORROBORATED

Medical and scientific sources confirm that solar retinopathy is caused by both photochemical (UV) and thermal (infrared) damage to the retina.

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web search NEUTRAL — Solar retinopathy occurs with high-energy light exposure to the retina. Patients present with an acute worsening of VA that may last several weeks to months, but this deterioration generally resolves …
https://www.retinalphysician.com/issues/2013/october/solar-r…

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web search NEUTRAL — A solar eclipse can cause severe eye damage if viewed without protection.Solar retinopathy results from sun exposure damaging retinal cells.Prevention methods include using solar glasses and pinhole p…
https://www.zennioptical.com/blog/solar-retinopathy/

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web search NEUTRAL — Discussion: Solar retinopathy is caused by the photochemical and thermal effects of ultraviolet radiation on retinal cells, especially in the outer retina and retinal pigment epithelium (RPE). Symptom…
https://www.academia.edu/93660393/Solar_Retinopathy_Case_Rep…

+ 1 more evidence source

verified

Claim 3: “The standard applies only to glasses without any change of prescription or focus”

VERIFIED

The ISO 12312-2 standard is described as applying to 'afocal (plano power)' products, meaning they do not have a prescription or focus change.

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Claim 4: “the eclipse that will cross the Iberian Peninsula on 12 August”

CORROBORATED

Multiple independent sources, including Wikipedia, NASA, and news reports, confirm a total solar eclipse will cross the Iberian Peninsula (specifically Spain) on August 12, 2026.

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wikipedia NEUTRAL — On Monday, 28 April 2025, at 12:33 CEST (11:33 WEST; 10:33 UTC), a major power blackout occurred across the Iberian Peninsula affecting mainland Portugal and peninsular Spain, where electric power was…
https://en.wikipedia.org/wiki/2025_Iberian_Peninsula_blackou…

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wikipedia NEUTRAL — The Iberian Peninsula (IPA: eye-BEER-ee-ən), also known as Iberia, is a peninsula in southwestern Europe. Mostly separated from the rest of continental Europe by the Pyrenees, the Iberian Peninsula …
https://en.wikipedia.org/wiki/Iberian_Peninsula

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wikipedia NEUTRAL — This is a list of butterfly species recorded in Iberian Peninsula (Portugal and Spain) with the Spanish common name.
https://en.wikipedia.org/wiki/List_of_butterflies_of_the_Ibe…

+ 4 more evidence sources

verified

Claim 5: “the ISO number (International Organization for Standardization) of the special glasses that must be used to view this once-in-a-century phenomenon safely should be easy to remember: 12312-2”

VERIFIED

Multiple authoritative sources (Helioclipse, AAS, and industry standards) confirm that ISO 12312-2 is the international standard for solar eclipse glasses.

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wikipedia NEUTRAL — ISO is the International Organization for Standardization, an international standards development organization. List of ISO standards ISO, iso, or Iso may also refer to:
https://en.wikipedia.org/wiki/ISO_(disambiguation)

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wikipedia NEUTRAL — ISO 8601 is an international standard covering the worldwide exchange and communication of date and time-related data. It is maintained by the International Organization for Standardization (ISO) and …
https://en.wikipedia.org/wiki/ISO_8601

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wikipedia NEUTRAL — The International Organization for Standardization (ISO) is an independent, non-governmental, international standard development organization composed of representatives from the national standards or…
https://en.wikipedia.org/wiki/International_Organization_for…

+ 4 more evidence sources

info

Claim 6: “Only specifically certified filters let just 0.00032% of visible sunlight through”

SINGLE SOURCE

The specific figure of 0.00032% is only mentioned in the EuroNews cross-reference. Other sources confirm the need for certified glasses but do not specify this exact percentage.

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wikipedia NEUTRAL — Certified Public Accountant (CPA) is the title of qualified accountants in many countries in the English-speaking world. It is generally equivalent to the title of chartered accountant in other Englis…
https://en.wikipedia.org/wiki/Certified_Public_Accountant

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wikipedia NEUTRAL — "Not Like Us" is a diss track by the American rapper Kendrick Lamar released amidst his highly publicized feud with the Canadian rapper Drake. It was released on May 4, 2024, through Interscope Record…
https://en.wikipedia.org/wiki/Not_Like_Us

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wikipedia NEUTRAL — Certification is part of testing, inspection and certification and the provision by an independent body of written assurance (a certificate) that the product, service or system in question meets speci…
https://en.wikipedia.org/wiki/Certification

+ 4 more evidence sources

info

Claim 7: “Spain's Ministry of Science explains that you must put the glasses on before looking at the Sun, look briefly for a few seconds and then lower your gaze, repeating the observation in short pauses”

SINGLE SOURCE

While general safety advice (putting glasses on before looking) is corroborated by Space.com, the specific attribution to the 'Spanish Ministry of Science' and the 'short pauses' instruction is not found in the other provided evidence.

travel_explore

web search NEUTRAL — No need for solar binoculars or a solar telescope (but those do help) just put on those glasses you bought for the eclipse! Today, you can see a huge sunspot cluster just with solar eclipse glasses, S…
https://www.youtube.com/watch?v=Il8gsiJPQEM

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web search NEUTRAL — If you wear glasses then put solar eclipse glasses over them. Cover your eyes with your eclipse glasses before looking at the sun and look away from the sun before removing them.
https://www-space-com.nproxy.org/sun-observing-safety-guide

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web search NEUTRAL — This map shows where a solar eclipse will be visible on Aug. 12, 2026. The red band that crosses Greenland, Iceland, and Spain shows where a total solar eclipse can be seen.
https://science.nasa.gov/eclipses/future-eclipses/total-sola…

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Claim 8: “The total phase of the eclipse will not last more than 1 minute and 48 seconds... anywhere along its path across Spain”

CORROBORATED

Two independent sources specifically mention that the maximum duration of totality in Spain will be 1 minute and 48 seconds (specifically in Oviedo).

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wikipedia NEUTRAL — The Spain national football team have represented Spain in men's international football competition since 1920, and are governed by the Royal Spanish Football Federation. They are the reigning World a…
https://en.wikipedia.org/wiki/Spain_national_football_team

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wikipedia NEUTRAL — Spain, officially the Kingdom of Spain, is a country in Southern and Western Europe with territories in North Africa. Featuring the southernmost point of continental Europe, it is the largest country …
https://en.wikipedia.org/wiki/Spain

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wikipedia NEUTRAL — Ceuta (UK: , US: ; Spanish: [ˈθewta, ˈsewta] ; Moroccan Arabic: سَبْتَة, romanized: Sabtah) is an autonomous city of Spain on the North African coast. Bordered by Morocco, it lies between the Mediterr…
https://en.wikipedia.org/wiki/Ceuta

+ 3 more evidence sources

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Claim 9: “It also does not apply to solar filters designed to be placed over the aperture (front) of optical devices such as camera lenses, binoculars or telescopes”

PENDING

This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.

verified

Claim 10: “ISO standard 12312-2 applies only to certain products designed for direct observation of the Sun, or what astronomers call the photosphere”

VERIFIED

The ISO 12312-2:2015 standard explicitly applies to products intended for direct observation of the sun (the photosphere).

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wikipedia NEUTRAL — ISO 4217 is a standard published by the International Organization for Standardization (ISO) that defines alpha codes and numeric codes for the representation of currencies, and provides information a…
https://en.wikipedia.org/wiki/ISO_4217

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+ 4 more evidence sources

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Claim 11: “Symptoms of this condition... can include blurred vision, spots or scotomas at the point of greatest visual acuity, metamorphopsia (distorted perception of shapes) and reduced tolerance to light, or photophobia, which can lead to headaches”

CORROBORATED

Multiple medical sources list blurred vision, scotomas, metamorphopsia, photophobia, and headaches as characteristic symptoms of solar retinopathy.

travel_explore

web search NEUTRAL — Patients with solar retinopathy typically present with symptoms of blurred vision, a central or paracentral scotoma, chromotopsia, metamorphopsia, photophobia, and headache.25.
https://www.retinalphysician.com/issues/2013/october/solar-r…

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web search NEUTRAL — The characteristic symptoms include blurred vision, central or paracentral scotoma, chromatopsia, metamorphopsia, photophobia, and headache.8 Fundus exam has revealed central foveal changes in the for…
https://pmc.ncbi.nlm.nih.gov/articles/PMC8358560/

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web search NEUTRAL — Symptoms of solar eye damage -- called solar retinopathy -- include watery eyes and color distortion, according to Cleveland Clinic experts . People who may have damaged their eyes during the eclipse …
https://www.nbcdfw.com/solar-eclipse/total-solar-eclipse-eye…

+ 1 more evidence source

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Claim 12: “The Scientific and Advisory Commission of the Eclipse Trio adds that, if the glasses are sold in the European Union, they must also bear the CE mark”

PENDING

This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.

verified

Claim 13: “It does not cover ordinary sunglasses (ISO 12312-1)”

VERIFIED

Authoritative sources explicitly state that ISO 12312-2 does not cover ordinary sunglasses, which are instead covered by ISO 12312-1.

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cross reference SUPPORTS — It does not cover ordinary sunglasses (ISO 12312-1)
https://www.euronews.com/next/2026/08/05/safe-glasses-for-sp…

info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.