Ophthalmic Assistant

Answer: A - True

True. It is always preferable to have a patient view a whole line of letters rather than single optotypes because distinguishing between letters is as important as distinguishing parts of a letter. This is especially significant when testing children because those with amblyopia are better ableto identify single letters and the end letters of a line than letters bound on two sides by other letters.This is called the “crowding phenomenon.” Mild amblyopia may be missed if the child is presentedwith solitary objects to identify.