The human eye’s ability to focus light directly onto the retina is essential for clear vision. Refractive errors occur when the shape of the eye prevents light from focusing correctly, leading to blurred vision. One such condition results in difficulty seeing distant objects clearly, while near objects remain in focus. This is often referred to as myopia. Conversely, another refractive error causes nearby objects to appear blurred, while distant objects are seen with greater clarity. This condition is commonly known as hyperopia.
Understanding these visual impairments is crucial for accurate diagnosis and appropriate corrective measures. The ability to distinguish between these conditions allows for the selection of suitable lenses or surgical procedures to improve visual acuity. Historically, the correction of these conditions has evolved from rudimentary lenses to advanced refractive surgery techniques, significantly enhancing the quality of life for affected individuals.
