35480
He has 2 % peripheral vision due to macular degeneration , which first began to affect him at the age of four and a half ; his brother also has the disease .
 macular degeneration
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:
 macular degeneration