Mayeso a masomphenya amawunika ntchito zosiyanasiyana za diso.Ena angayang'ane momwe mumamvera pakuwala (kuwala kowala), momwe maso anu amagwirira ntchito limodzi kuti apereke kuzindikira mozama, ndi zina. Mayeso a masomphenya nthawi zambiri amachitidwa limodzi ndi mayeso ndi mayeso omwe amawunika thanzi la diso.