が見(み)られるCan see, Can be seen, Can observe, Can be observed, Be evident, Chance to see something

Unlike 見(み)える 'to be visible', which focuses on whether something can be seen or not, 見(み)られる (the potential form of 見(み)る) focuses on the viewer's physical ability to see something. Due to this が見(み)られる is used to highlight things that require some form of 'effort' to see, like 'changes', 'trends', etc.

As a result of the 'effort' that is required, が見(み)られる is often translated as 'for (A) to be evident', 'it can be observed that (A)', 'it can be seen that (A)', and other similar structures. To use 見(み)られる, simply add it after the noun that you would like to show as being 'evident'.

As られる is both the potential and passive form of 見(み)る, it may be interpreted either way. However, in the case of ラ抜(ぬ)き言葉(ことば) (ら removed verbs), only 可能(かのう) (possibility) may be expressed, not 受(う)け身(み) (passivity).