Visual acuity is the most common clinical measurement of how your eyes function. It's usually one of the first tests taken during a comprehensive eye exam to determine how sharp your vision is. Visual acuity is an essential aspect of human eyesight that shapes our ability to sense our surroundings. It determines the distances we see things clearly and sharply, whether far or near. It all depends on your visual acuity regarding how much detail you can observe when reading, driving, or watching a movie. Visual acuity is the medical term for your eyesight and how well you can see. You’ve had a visual acuity test if you’ve ever looked at a wall chart of letters or symbols during an eye exam. Five complex functions of the human eye comprise visual acuity, visual field, contrast sensitivity, colour perception and image formation. To identify the actual cause of poor vision, ophthalmologists apply a number of methods to determine the visual acuity of a patient. Technicians, therefore, play an important role to test and determine accurate visual acuity of a person. It is important to measure visual acuity, record and document the findings for further reference.
