Roughly 2.2 billion people worldwide experience some form of visual impairment, according to the World Health Organization. The eye, as the primary sensory organ for sight, can suffer gradual changes that often go unnoticed until significant deterioration occurs. Unfortunately, late detection remains a major obstacle, with many individuals recognizing vision problems only after daily activities are affected. Understanding the initial signs is crucial for early intervention and preserving long-term eye health.
Health
31. Trouble with Contrast Trouble with contrast sensitivity refers to difficulty distinguishing objects from their background when there is little difference in brightness or color. This…