<prompt> If a person has visual acuity 66. At what distance will heshe be able to read 624 lines6 metres24 metres36 metres48 metres  <response>: Answer- B. 24 metresVisual acuity 616 means that a Person with normal visual acutiy can read the smallest line at a distance of 6 meters.Visual acdty 6124 means that this person can read paicular letterslines at a distance of 6 meters which a person with normal visual acuity can read from a distance of 24 mm. 