These spasms can affect any segment, or portion, of the iris and involve the iris dilator muscle. Contractions of the iris dilator muscle, a smooth muscle of the eye running radially in the iris, can cause irregular distortion of the pupil, thus making the pupil look tadpole shaped and giving this condition its name. Episodic segmental iris mydriasis was first described and termed âtadpole pupilâ in 1912 by HS Thompson
Updated August 22, 2017. Long Term Evolution is a wireless broadband technology designed to support roaming internet access by cell phones and handheld devices. Because LTE offers significant improvements over older cellular communication standards, some refer to it as a 4G technology, along with WiMax.
Convergent evolution. Convergent evolution is the independent evolution of similar features in species of different lineages. Convergent evolution creates analogous structures that have similar form or function but were not present in the last common ancestor of those groups. The cladistic term for the same phenomenon is homoplasy. The recurrent evolution of flight is a classic example, as flying insects, birds, pterosaurs, and bats have independently evolved the useful capacity of flight. Functionally similar featur