2218
After at least one year follow - up , argon laser showed a statistically significant effect ( p less of 0 , 01 ; Kolmogorow - Smirnov test ) on the stabilization or the amelioration of visual acuity compared with the non treated group .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 None