Answer :
Final answer:
A 20/50 result from a Snellen chart test indicates the patient can see at 20 feet what a person with normal vision can see at 50 feet, suggesting their visual acuity is less than normal.
Explanation:
A person's visual acuity is measured using a Snellen chart, which assesses their ability to discern letters or symbols at a fixed distance, usually 20 feet. A measurement of 20/50 vision means that the person can see at 20 feet what a person with normal vision can see at 50 feet. Essentially, it signifies that the patient's vision is poorer than the standard or normal vision. Testing visual acuity using a Snellen chart helps to approximate the sharpness or clarity of a person's eyesight by utilising letters that subtend a visual angle of 5 minutes of an arc at 20 feet, the standard for normal vision.
Answer:
It is a vision that is close to normal, if in the optometric revision improves with the use of the pinhole more than three lines, the problem may be of the refractory type; If this is not corrected, it can be concluded that there is a disease.
