US EditionWhat if a Trip to Space Changed Your Eyesight Forever?
TURKEY, JUL 18 – A Turkish study of 64 participants found Pfizer's vaccine caused an 8% decrease in corneal endothelial cells and thicker corneas, highlighting potential vision risks needing further study.
- This past week, scientists in Turkey studied 64 participants who received both doses of the Pfizer-BioNTech vaccine and discovered temporary corneal changes, raising concerns about long-term eye health.
- In May, the U.S. Food and Drug Administration expanded warning labels on Pfizer and Moderna vaccines to include myocarditis and pericarditis risks, though health authorities maintained benefits outweigh risks, and subjects had exams before and after dosing.
- Slight thickening of the cornea demonstrates change, corneal thickness rose from 528 to 542 micrometers and endothelial cell density fell from 2,597 to 2,378 per square millimeter.
- The researchers said, and the study team emphasized the need for long-term studies to assess persistent corneal effects after COVID-19 vaccination.
- In at-risk individuals, the study warned that persistent effects could lead to corneal edema or decompensation, highlighting long-term eye health concerns.
11 Articles
11 Articles
What if a trip to space changed your eyesight forever?
NASA has discovered that 7 out of 10 astronauts returning from the International Space Station have been unable to see clearly, with vision problems that can last for years! As we prepare for multi year Mars missions, scientists are racing to solve this mysterious "space blindness" before it derails humanity's greatest journey. It seems the cause could be as simple as the effects of weightlessness and the distribution of fluids around the body. …
Sally Susman helped steer Pfizer through COVID-19. Her advice for leaders? Learn to write — and listen.
During the pandemic, Susman said she pushed for Pfizer to be as transparent as possible about its work.Courtesy of Sally SusmanPfizer's Sally Susman said that you must be a strong writer to succeed as a communications leader.She spoke with Business Insider about how to leverage AI and strong interpersonal relationships.Susman recently announced she'd be leaving her job at the end of 2025, after 18 years at Pfizer.Do you aspire to be the guardian…
Pfizer COVID Vaccine Linked to Eye Damage.
PULSE POINTSWHAT HAPPENED: Scientists in Turkey discovered that Pfizer’s COVID-19 vaccine may temporarily affect the cornea, potentially leading to vision issues if long-term changes occur.WHO WAS INVOLVED: Researchers in Turkey conducted the study, examining 64 patients who received the Pfizer-BioNTech vaccine.WHEN & WHERE: The study was published on Wednesday in the journal Ophthalmic Epidemiology, with data collected over approximately 75 day…
Scientists discover Pfizer COVID jab linked to major eye damage – CLG News
Scientists discover Pfizer COVID jab linked to major eye damage | 18 July 2025 | Scientists have discovered that Pfizer’s COVID-19 vaccine may increase the risk of eye damage, leading to vision loss. The new study specifically examined how the vaccine affected patients’ corneas, the clear front part of the eye that allows light to enter. In 64 people, scientists in Turkey measured changes in the cornea’s inner layer, called the endothelium, befo…
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