A refraction test, also known as a refraction assessment or eye exam, is a standard procedure conducted by eye care professionals to determine an individual’s refractive error and prescribe corrective lenses. It typically begins with an assessment of visual acuity using standardized eye charts, followed by retinoscopy to estimate the refractive error by analyzing the movement and reflection of light within the eye. The subjective refraction, conducted through a phoropter, involves the patient’s feedback in selecting lenses for optimal clarity and comfort. Cycloplegic refraction may be employed for certain cases to achieve more accurate results by temporarily paralyzing the eye’s focusing mechanism. Throughout the test, the eye care professional ensures meticulous adjustments to refine the prescription, considering factors such as nearsightedness, farsightedness, astigmatism, and binocular vision.