The phrase ‘As Far as I Can See’ means in the way that I understand.
Example of Use: “As far as I can see, he has done nothing to lower our confidence in him.”
No one knows for sure what the origin of the idiom 'as far as I can see' is. Its literal meaning is 'the distance I can see unimpeded,' but its idiomatic meaning is quite different. The first recorded use of the word 'see' in reference to the mind or imagination was in the days of Middle English, around the year 1200.