An online tool designed to estimate visual acuity, often expressed as a fraction (e.g., 20/20), helps individuals understand their eyesight’s clarity at a specified distance. These tools typically present standardized eye charts or simulations, allowing users to input their observations and receive an approximate assessment. For example, a simulated Snellen chart might be used to assess how well someone can distinguish letters of varying sizes.
Access to such convenient and readily available resources empowers individuals to proactively monitor their visual health. While not a substitute for professional eye examinations, these resources can provide valuable preliminary insights, potentially prompting users to seek expert advice if needed. Historically, assessing visual acuity relied solely on in-person consultations. The advent of digital technology has dramatically democratized this process, enabling self-assessment and broader awareness of vision health.