The idea that assessment is intrinsic to effective instruction is traced from early experiments in the individualization of learning through the work of Benjamin Bloom to reviews of the impact of feedback on learners in classrooms.
Incidental hypervascular lesions are also very common findings in liver imaging. It is important to differentiate between 'touch' and 'don't touch' lesions. Benign 'don't touch' hypervascular tumors include hemangioma, FNH and small adenomas.
Corneal neovascularization refers to the growth of blood vessels in the cornea, which normally lacks blood vessels. This most frequently results from corneal oxygen deprivation, or hypoxia. In response to this hypoxia, the body attempts to provide necessary nutrients and oxygen to the deprived corneal tissues by the creation of new blood vessels.