NSG 331 Exam 2 Study Guide
Visual and Auditory Problems module (1 part) not as heavily covered as other 2 mods
WebEx Notes
o Eyes and ears not part of Final exam
o Glaucoma, MD, Cataracts - know treatment, clinical m
...
NSG 331 Exam 2 Study Guide
Visual and Auditory Problems module (1 part) not as heavily covered as other 2 mods
WebEx Notes
o Eyes and ears not part of Final exam
o Glaucoma, MD, Cataracts - know treatment, clinical manifestations
o Hearing- know nursing care of the hearing impaired
• Glaucoma *pressure & peripheral vision*
• [Lewis Table 20.12, 20.13]
o Normal intraocular pressure: 10 to 21 mm Hg
o Can lead to structural damage.
▪ Optic nerve damage
▪ Loss of peripheral vision
o Inflow > outflow IOP increases vision loss
o Risk Factors
▪ Black people over 40
▪ All persons over 60
▪ Family history!!
• Strong genetic link
▪ Open angle
• Blockage is NOT at the entrance , but inside
• Primary Open-Angle Glaucoma (POAG)
o Most common: 60% of all glaucoma
o Slow onset- S/S are often unnoticed because no pain or pressure.
o Usually bilateral, leads to tunnel vision
o Common in diabetics
o Cause
o Blockage of aqueous fluid drainage increasing IOP cupping of the optic disc
destroys retinal nerve fibers painless vision loss.
o IOP: 22 – 32 mm Hg
• Symptoms
o Asymptomatic early
o Change in peripheral vision
o Bumping into objects
o Many assume normal aging changes
o Dx: elevated IOP (22-32mm/Hg), visual field loss, cupping of optic nerve
• Treatment
o Medications
▪ Miotic Drops
• pupil constriction and reduce formation of aqueous humor
• Sx: burning, blurred vision
▪ Beta Blockers
• Decreases production of aqueous humor
• Sx: burning, tearing, slowed HR, fatigue
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