#Ophthalmology

A Turkish study reports a potential, short-term change in the cornea following Pfizer-BioNTech vaccination. Researchers observed small increases in corneal thickness and a decline in endothelial cell density after vaccination, but the changes were temporary and did not visibly affect vision in study participants.

The study tracked 64 adults who received the Pfizer vaccine, with imaging before the first dose and about two months after the second dose. The corneal endothelium kept the eye clear and showed an average thickness rise from 528 to 542 micrometers, about 2 percent, while endothelial cell density fell from roughly 2,597 to 2,378 cells per square millimeter, an 8 percent drop. Cells also showed more size variation and fewer hexagonal shapes, indicating cellular stress.

A newly published medical study has identified a potential connection between the Pfizer-BioNTech COVID-19 vaccine and changes in the cornea—the transparent front part of the eye—raising questions about possible implications for certain individuals at risk of vision problems. While researchers have emphasized that the detected changes appear to be temporary and have not led to loss of vision in the study group, these findings raise important considerations, especially for people with pre-existing ocular conditions.

Imagine being able to perceive a color that no human has ever seen before—a jump in our sensory experience that until now has belonged only to science fiction. This is exactly what a groundbreaking team of engineers, computer scientists, and ophthalmologists at the University of California, Berkeley, in collaboration with experts from the University of Washington, claim to have achieved. In recently published research in the journal Science Advances, these scientists reveal that by precisely targeting specific cells in the human retina, they have enabled volunteers to see a novel color, which the team dubbed “olo” (MedicalXpress).

A team of engineers, computer scientists, and ophthalmologists from UC Berkeley, in collaboration with researchers from the University of Washington, reports a groundbreaking advance in human vision. In new research published in Science Advances, volunteers were able to perceive a color not found in the traditional spectrum. The researchers describe this color as “olo,” achieved by precisely stimulating specific cells in the retina.

For Thai readers, the idea of a completely unprecedented color sparks both scientific curiosity and cultural imagination. Color shapes art, design, and ritual—think of color significance in Thai traditions, or the way colors are used in temples and festivals. The possibility of expanding the human color palette could influence Thai textiles, temple murals, and even symbolic representations in religious practices.