Pingelap is a small atoll located in the Pacific Ocean, part of the Federated States of Micronesia. It covers an area of approximately 1.8 square kilometers and has a population of around 250 people. The atoll is characterized by its lush vegetation, sandy beaches, and vibrant coral reefs, making it a popular destination for ecotourism and diving enthusiasts. One notable aspect of Pingelap’s history is the prevalence of achromatopsia, a rare genetic condition that causes color blindness and extreme sensitivity to light. The condition is colloquially known as “Pingelapese blindness” due to its high frequency among the island’s inhabitants. According to local legend, a devastating typhoon in the 18th century reduced the island’s population to a few survivors, one of whom was a carrier of the gene responsible for achromatopsia. The resulting genetic bottleneck led to a high prevalence of the condition among the island’s descendants.
Pingelap
