Unfortunately, no. Someone else asked me the same question, citing this reddit post on the topic. However, after going back and looking through my own notes and searching for several hours across the lore sites, I wasn't able to find a single reference to Thaumaturges or Black Mages replacing their eye(s) with materia.
That's not to say this information isn't correct, but whatever source text originally hinted at this mutilation has been lost with 1.0. Unless, someone has the transcriptions to the 1.0 versions of the "International Relations," "Gearing Up," "The Voidgate Breathes Gloomy," and "Always Bet on Black" laying around so I can keep digging?
That's not to say this information isn't correct, but whatever source text originally hinted at this mutilation has been lost with 1.0. Unless, someone has the transcriptions to the 1.0 versions of the "International Relations," "Gearing Up," "The Voidgate Breathes Gloomy," and "Always Bet on Black" laying around so I can keep digging?