88082
Optician John Dollond ( 1706 – 1761 ) tried to correct for this distortion by combining two separate lenses , but it was still difficult to achieve good resolution for far distant light sources .
 John Dollond
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 John Dollond