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

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

Astronomical Event Public Health and Safety Governmental Resource Distribution

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Daily briefing

What to know about Astronomical Event

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 12

Techniques found 1

Topics 3

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 Astronomical Event story?
What evidence would most clearly confirm or weaken the claim that The total phase of the eclipse will not last more than 1 minute and 48 seconds... anywhere along its path across Spain?
How does this story connect Astronomical Event 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 12 claims against available evidence, cross-references, web search, and Wikipedia. Here is what the fact-checking layer found.

check_circle Corroborated 5

verified Verified By Reference 2

verified Verified 2

schedule Pending 2

help Insufficient Evidence 1

verified

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

VERIFIED BY REFERENCE

The evidence confirms the eclipse date and location, but none of the provided search results specify the exact duration of totality in Spain as 1 minute and 48 seconds.

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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

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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 — 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

+ 3 more evidence sources

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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 sources confirm that solar retinopathy is caused by both photochemical (UV) and thermal (infrared/high-energy) effects on 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…

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Claim 3: “the eclipse that will cross the Iberian Peninsula on 12 August”

CORROBORATED

Multiple independent sources, including Wikipedia and NASA, confirm a total solar eclipse will occur on August 12, 2026, and will be visible in Spain (Iberian Peninsula).

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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 ancestry of modern Iberians, comprising the Spanish and Portuguese, reflects the Iberian Peninsula's position in the southwestern corner of Europe and broadly aligns with patterns typical of South…
https://en.wikipedia.org/wiki/Genetic_history_of_the_Iberian…

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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

+ 3 more evidence sources

verified

Claim 4: “ISO standard 12312-2 applies only to certain products designed for direct observation of the Sun, or what astronomers call the photosphere”

VERIFIED

Evidence from a specialized source on ISO 12312-2 explicitly states that the standard applies to products intended for direct viewing of the photosphere.

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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 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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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…

+ 3 more evidence sources

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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”

CORROBORATED

Multiple sources confirm that ISO 12312-2 is the international standard for eclipse glasses used to safely view the sun.

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+ 3 more evidence sources

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Claim 6: “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 7: “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”

INSUFFICIENT EVIDENCE

While the evidence discusses what ISO 12312-2 applies to (handheld viewers), the provided search results do not explicitly state that it does NOT apply to aperture filters for telescopes or cameras.

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Claim 8: “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 explicitly list blurred vision, scotomas, metamorphopsia, photophobia, and headaches as symptoms of solar retinopathy.

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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 — More serious symptoms of solar retinopathy include: Blurred vision. Eye pain. Metamorphopsia (straight lines appear rounded). Micropsia (objects appear smaller than they are).
https://my.clevelandclinic.org/health/diseases/solar-retinop…

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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/

verified

Claim 9: “The standard applies only to glasses without any change of prescription or focus”

VERIFIED

The ISO 12312-2:2015 standard documentation explicitly states it does not apply to afocal (plano power) sunglasses, confirming it is for non-prescription/non-focusing glasses.

travel_explore

web search NEUTRAL — ISO 12312-2 applies only to certain products intended for direct viewing of the everyday Sun, which astronomers call the photosphere and which you can think of as the Sun's bright face.Furthermore, it…
https://eclipse.aas.org/eye-safety/iso12312-2

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web search NEUTRAL — ISO 12312-2:2015 does not apply to the following: a) afocal (plano power) sunglasses and clip-ons for general use intended for protection against solar radiation; b) eyewear for protection against rad…
https://www.iso.org/standard/59289.html

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web search NEUTRAL — SAFE SOLAR OBSERVATION – These certified eclipse glasses meet the ISO 12312-2 standard and are designed for direct solar observation. Approved for use and perfect for observing solar eclipses, sunspot…
https://homebbc.net/products/solar-eclipse-glasses-with-iso-…

verified

Claim 10: “Only specifically certified filters let just 0.00032% of visible sunlight through”

VERIFIED BY REFERENCE

While evidence confirms the existence of certified solar filters and the upcoming eclipse, none of the provided sources mention the specific percentage (0.00032%) of visible sunlight allowed through.

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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

+ 3 more evidence sources

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Claim 11: “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.

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Claim 12: “It does not cover ordinary sunglasses (ISO 12312-1)”

CORROBORATED

Evidence explicitly states that ISO 12312-2 does not apply to ordinary sunglasses and that there is a separate standard, ISO 12312-1, for them.

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.