Abstract
Secondary macular hole (SMH) is defined as the macular hole due to a specific ocular pathology. SMH is the similar clinical features with those of idiopathic macular hole (IMH). The pathogenetic mechanisms for the formation of SMH are similar to those for IMH, with small variations, although the indication of surgery and prognosis is subtle. The predictive prognostic outcome is the anatomical morphology of SMH, the preoperative visual acuity, the background pathology, and the additional ocular pathology, therefore, the prognosis of SMH is not as good as those of the prognosis of IMH.
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