89946
The cells in the retina line the back of the eye , except for where the optic nerve exits ; this results in a blind spot .
 blind spot
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 blind spot