と見(み)えるIt seems that, It can be deduced, One can conclude that

とみえる (primarily written only in hiragana) is a phrase that combines the case marking particle と, with the る-Verb見(み)える 'to appear', or 'to be visible'.

This use of the と particle in Japanese is called a result, and marks when (A) is something that has come to a conclusion, or can be concluded. In this way とみえる literally means 'from the way it appears, one can conclude that it's (A)'. However, this translates a bit more smoothly as 'it can be deduced that (A)', or 'it seems that (A)'.

This expression is always used directly after the phrase that it is drawing as a conclusion. However, nouns and な-Adjectives will require だ before とみえる.

While this phrase is conjecture (making a guess about something), it usually implies that the speaker has done some sort of research, or has some reason that led them to 'draw (A) as a conclusion'. Due to this, it appears reasonably confident.

Fun Fact

と always 'sums up' things. As a quotation, it sums up the phrase before it as either something that was said, or thought. As 一緒(いっしょ) 'being together', it sums up groups of things that are existing/performing actions mutually. Lastly, as a result, it sums up causes, and then illustrates their effects.