Visual acuity is commonly measured using the Snellen chart. A measurement of 20/35 indicates that an individual can clearly see at 20 feet what a person with standard vision can see at 35 feet. This signifies less than optimal visual clarity.
Clear vision is essential for performing everyday tasks, from reading and driving to recognizing faces and navigating safely. While not severely impaired, reduced acuity like 20/35 can impact the quality of life, especially in situations requiring sharp vision. Historically, standardized vision charts like the Snellen chart revolutionized eye care, enabling objective measurement and diagnosis of refractive errors. Early detection and correction of vision problems, even seemingly minor ones, are crucial for preventing further deterioration and ensuring optimal visual function throughout life.