"No adverse safety signals" and "2" patients had “SOME SIGNS” of visual improvement. (Whatever does that mean?)
Maybe they looked at tea leaves for their indicators because, no further explanations, no quantitative data as to what SOME SIGNS mean.
For example, if took my car in for repair and the dealer said it’s all ready to go as there are no adverse safety signals and SOME SIGNS of repair improvement. I’d go to another car place and vote with my feet as I’d expect these people to be completely incompetent and capable of nothing but fluff and hype.