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What's the Smallest Object the Human Eye Can See?

The human eye is an extraordinary organ capable of detecting remarkably small objects, but exactly how small? This comprehensive guide explores the limits of human visual acuity, the factors that affect it, and what this means for our everyday perception of the world.The Scientific Limits of Visual AcuityHuman visual acuity—the ability to resolve detail—can be measured in several ways:Standard Measurements 20/20 vision: The standard benchmark for normal vision, allowing perception of letters 5 arcminutes in size Spatial resolution: Approximately 1 arcminute (1/60 of a degree) for the average human eye Vernier acuity: The ability to detect misalignment, which can be