Hearing and vision Chapter 22

Anatomy and Physiology of an eye 13 min After watching the video be ready to: Assess color of iris and clarity of a cornea Measure the size of a pupil and assess pupil’s reaction to light Know what cataract and glaucoma are

Visual acuity in 5 min Measure your partners visual acuity, write it as 20/x format Once done, try glasses mimicking different conditions of an eye

Common vision problems Visual acuity 2 min /watch?v=6YxffFmi4Eo /watch?v=6YxffFmi4Eo /watch?v=6YxffFmi4Eo Cataract 2 min /watch?v=K_jZCzRf4ww /watch?v=K_jZCzRf4ww /watch?v=K_jZCzRf4ww Glaucoma 3 min /watch?v=TgjdPgSxeYg

Care for glasses Be sure that patient wears them Be sure glasses are clear, and if not, wash in a lukewarm water and dry with a cotton cloth and clear them with a special cloth, do not use paper tissue

Care for visually impaired patient Explain where everything is using imaginary clock Do not move furniture or w/c Walk a little ahead of patient Provide Braille and audiobooks Know eye emergency symptoms seeing halo, blurred vision, reddening of the eye (angle closure glaucoma and wet form of macular degeneration) – report immediately to prevent vision loss.

Hearing and balance A&P min shttps:// s 2 min s Look at the three small bones (ossicles) involved in the transmission of sound

Otitis min Report to a nurse or MD Follow recommendations

Hearing loss and hearing aids

Cochlear implant A complex device for certain types of hearing loss. External part sits behind the ear, internal part is surgically implanted under the skin. An implant doesn’t restore hearing, but provides useful representation of sounds in environment.

Taking care of a hearing aid Out for a night, in in the morning Turn them on and check if they work before placing (hold between palms) Clean with dry cloth only, never with alcohol. Check tubing for clogging with wax. Remove before showering, cover if using hair spray. Swing a battery compartment out for a night Keep hearing aid in a safe place for a night time a hearing aid box with a patient’s name on it.

Basic sign language