Audiology and hearing health professionals in developed and developing countries (2002), Lyn et al. (1998), and Swart et al. (1995), impacted cerumen is one of the most common ear diseases and causes of hearing loss, with prevalence rate between 7.4% and 63%. Additionally, otoscopy does not require a great deal of expertise beyond basic training and is useful to refer a child when the tympanic membrane cannot be visualized due to occlusion of the external auditory meatus by cerumen. Pure-tone audiometry screening, in which there is typically no attempt to find threshold, has been found to accurately assess hearing status in children six years and older, when trained health workers
Through the Looking Glass and What Walter Found There A.V. Club" found the episode enjoyable due to its strangness, noting that it is a much quieter and less action-packed than previous episodes. He rated the episode a "B+" grade. Through the Looking Glass and What Walter Found There "Through the Looking Glass and What Walter Found There" is the sixth episode of the fifth season of the Fox science-fiction/drama television series "Fringe", and the 93rd episode overall. The episode was written by David Fury and directed by Jon Cassar. Peter (Joshua Jackson), after injecting the Observer implant in his own body, returns to Etta's safe-house to mourn her loss.