[Theoretic explanation about visual disorder induced by fibrous dysplasia of skull: pressure disequilibrium between lamina cribrosa].

Objective: To investigate the causes for changes in optic nerve head and visual impairment caused by fibrous dysplasia (FD) of optic canal stenosis.

Methods: A total of 12 FD patients, diagnosed by CT, received the fundus and optical coherence tomography (OCT). Those with FD involving optic canal underwent decompression.

[Single channel multifocal VEP studies in normal Chinese].

Objective: To investigate the waveform characters of single channel mVEP and its variability in normal Chinese people.

Methods: VERIS Science 4.3 system was used to record and analyze single channel mVEP.