Visual acuity is an important aspect of eye health and refers to the clarity or sharpness of vision. It measures the eye’s ability to distinguish details and shapes at different distances. Normal visual acuity is considered to be 20/20, meaning that an individual can clearly see letters and symbols from 20 feet away. Visual acuity can be affected by various factors, including refractive errors (myopia, hyperopia, astigmatism), cataracts, glaucoma, and macular degeneration. Regular eye exams and proper eye care are crucial for maintaining good visual acuity and overall eye health.