The Eyes of Golden Apple Snails

In many regions, apple snails are considered an invasive species and pest. However, scientists are studying one freshwater species, the golden apple snail (Pomacea canaliculata), for its unique ability to regenerate a lost eye. Researchers hope to learn from the eyes of golden apple snails something that could have potential applications in preserving human vision.

Apple snails have eyes that resemble cameras, similar to human eyes. A golden apple snail’s eye can heal itself if damaged. If the eye is completely removed, a new eye will grow back in less than a month. Of course, human eyes cannot do that. Researchers studying the eyes of golden apple snails hope to find new ways to treat human eye injuries or diseases like macular degeneration.

By using the gene editing tool CRISPR/Cas9 to disable certain genes, scientists are searching for the genes responsible for the snail’s remarkable eye recovery. Disabling the snails’ PAX6 gene prevented them from developing eyes. That same gene is crucial for human eyes. Due to the similarity, further research may lead to new breakthroughs in treating eye diseases.

Humans cannot regrow damaged parts of the eye, and doctors have yet to perform an eye transplant that communicates with the brain. God has given humans curiosity and intelligence to explore life’s mysteries. In the eyes of golden apple snails, He has provided us with a model to study and potentially learn how to restore lost or damaged vision.

— Roland Earnst © 2025

References: sciencenews.org and nature.com