Standard body position of the ear, push/pull lesion to select lesions.
1. Total 12 kinds of normal or diseased ear drum:
1) Acute otitis media
2) Acute otitis media without obvious signs
3 )Abnormal secretion of middle ear
4) Tympanosclerosis
5) Myringotomy
6) Ear wax (a little big)
7) Acute middle ear infection
10) Effusion of posterior ear drum
11) Perforation of ear drum
12) Normal tympanic membrane
