Causes of zonular weakness or dehiscence could be congenital (e.g., Marfan's syndrome, familial or idiopathic ectopia lentis, homocystinuria, etc.), traumatic, surgical (e.g., extra procedures due to dense cataract, miotic pupils, etc.), or secondary (e.g., pseudoexfoliation, uveitis, glaucoma, high myopia, etc.)