If left alone, there is only up to 1 in 10 chance that a FTMH will spontaneously close with improvement in visionThe vast majority of FTMHs will progress gradually over time to a level where you many not even be able to read the largest print on a standard vision chart. Your peripheral vision will not be affected, however. We know that over time, FTMHs will typically enlarge, and that the larger and more established the hole, the worse the prognosis for vision improvement