Early glaucoma often presents without pain or obvious symptoms, leading many to believe normal eye pressure equates to safety. However, doctors caution this is a dangerous misconception. Standard daytime measurements can miss fluctuations in pressure that occur throughout the day, creating blind spots in diagnosis. These fluctuations, especially overnight, can still cause optic nerve damage and eventual vision loss. Experts emphasize the importance of comprehensive eye exams and potentially 24-hour monitoring to accurately assess glaucoma risk. Ignoring the potential for fluctuating pressure could lead to delayed treatment and irreversible blindness. Regular check-ups are vital for preserving vision, even with seemingly normal initial readings.