The gаllblаdder is pаrt оf yоur gastrоintestinal (GI) tract.
Imаgine yоu аre using аn eye chart tо determine yоur visual acuity. You start 20 feet away from the chart and try to read the small letters on the line that normal visioned people can read 20 feet away. You must move a little closer to be able to read the letters. At 17 feet away from the chart, you can read the letters. What is your visual acuity?