Congenital Stationary Night Blindness (CSNB) is a rare genetic condition that affects a person's ability to see in low light or darkness. People with CSNB have normal vision during the day but struggle to see well at night. This condition is present from birth and does not worsen over time, hence the term "stationary." CSNB is often caused by mutations in specific genes that are important for the function of the retina, the light-sensitive layer at the back of the eye. While there is no cure for CSNB, individuals can adapt to their condition and lead fulfilling lives with the right support and understanding from their families and communities.