When patients have their IOP measured, it determines the eye's what?
Ability to contract and relax the dilator muscle
Resistance from the ciliary bodies
Amount of aqueous humor
Tear duct capacity
The Correct Answer is C
a) Ability to contract and relax the dilator muscle: This refers to the iris muscles, but it does not relate directly to the measurement of intraocular pressure (IOP).
b) Resistance from the ciliary bodies: The ciliary body produces aqueous humor, but IOP measures the pressure exerted by the amount of aqueous humor, not resistance from the ciliary bodies.
c) Amount of aqueous humor: IOP is determined by the balance between the production and drainage of aqueous humor within the eye.
d) Tear duct capacity: Tear duct capacity relates to tear drainage, not intraocular pressure.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
a) Beta-adrenergic agent: These medications are used to reduce intraocular pressure in glaucoma, not for pupil dilation.
b) Adrenergic agent: Adrenergic agents, such as phenylephrine, are used to dilate the pupils (mydriasis) for eye examinations.
c) Osmotics: Osmotic agents, like mannitol, are used to reduce intraocular pressure in conditions like glaucoma, but they do not dilate the pupils.
d) Corticosteroid: Corticosteroids are used to reduce inflammation in the eye but do not dilate the pupils.
Correct Answer is A
Explanation
a) Avoid bending at the waist: Avoiding bending at the waist reduces the risk of increasing intraocular pressure, which could interfere with healing after cataract extraction.
b) Seeing flashes of light is an expected finding following extraction: Seeing flashes of light can be a sign of retinal detachment, which should be reported to a provider immediately.
c) Remove the eye shield at bedtime: The eye shield should be worn while sleeping to protect the eye, typically for several weeks after surgery.
d) Limit the use of laxatives if constipated: This is generally not a concern in cataract surgery aftercare. Stool softeners may be recommended instead to prevent straining.
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