Ay, mamsh, that's definitely something to mention to your OB as soon as possible kasi eye changes during pregnancy can happen pero hindi lahat ay normal, better safe than sorry talaga, especially if it's one eye lang na may issue! A few of us mums experienced blurry vision sa second trimester but it was both eyes, so this sounds different sa experience namin and honestly mas alarming kaya please don't wait, book an appointment na para ma-check niya properly.