A nurse is providing teaching to a group of clients about changes that occur when clients experience open-angle glaucoma. Which of the following statements should the nurse include in the teaching?
"Vision changes occur when blood vessels leak fluid or blood under a portion of the retina."
"Vision changes occur when the cloudy lens alters the passage of light through the eye."
"Vision changes occur when retinal tissue pulls away from the blood vessels in the eye."
"Vision changes occur when pressure in the eye is increased due to a decrease of aqueous humor."
The Correct Answer is D
A. "Vision changes occur when blood vessels leak fluid or blood under a portion of the retina": This statement describes a symptom of diabetic retinopathy, not open-angle glaucoma. In open-angle glaucoma, vision changes primarily result from increased intraocular pressure (IOP) due to impaired drainage of aqueous humor, not leakage of fluid or blood under the retina.
B. "Vision changes occur when the cloudy lens alters the passage of light through the eye": This statement describes a symptom of cataracts, not open-angle glaucoma. Cataracts involve clouding of the lens inside the eye, which affects the passage of light and leads to visual disturbances. Open-angle glaucoma, however, primarily affects the optic nerve and visual field due to increased intraocular pressure.
C. "Vision changes occur when retinal tissue pulls away from the blood vessels in the eye": This statement describes a symptom of retinal detachment, not open-angle glaucoma. Retinal detachment occurs when the retina detaches from the underlying layers of the eye, leading to vision changes and potentially vision loss. Open-angle glaucoma, on the other hand, primarily involves increased intraocular pressure and optic nerve damage.
D. "Vision changes occur when pressure in the eye is increased due to a decrease of aqueous humor": This statement is accurate. In open-angle glaucoma, vision changes occur due to increased intraocular pressure resulting from inadequate drainage of aqueous humor from the eye. This increased pressure can lead to damage of the optic nerve, resulting in peripheral vision loss and potentially blindness if left untreated.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Answer: C
Rationale:
A) "I'm glad that I can work remotely from my computer. Prolonged use of a computer can strain the eyes, potentially interfering with the healing process after a retinal reattachment procedure. Clients are generally advised to limit screen time during recovery.
B) "I can't wait to be able to take a bath. Submerging the face in water, as during a bath, is discouraged postoperatively due to the risk of introducing bacteria into the eye and delaying healing. Clients are advised to stick to showers and avoid getting the affected eye wet.
C) "I get bored only being able to watch television. Watching television is usually permissible following retinal surgery, as it does not strain the eye excessively. This statement aligns with typical postoperative instructions.
D) "I will be relieved once I can drive myself to the store." Driving is contraindicated during the recovery phase due to potential visual disturbances and the need for the eye to heal properly. Clients are typically instructed to avoid driving until cleared by their ophthalmologist.
Correct Answer is A
Explanation
Tonometer intraocular pressure reading 8 mm Hg (Option A): A low intraocular pressure reading may indicate a detached retina. In a detached retina, the vitreous humor (gel-like substance in the eye) may leak into the space behind the retina, causing a decrease in intraocular pressure. However, it's important to note that intraocular pressure alone cannot definitively diagnose a detached retina, and further diagnostic tests, such as a dilated eye examination or retinal imaging, would be needed for confirmation.
Smooth retina edges identified on slit-lamp biomicroscope examination (Option B): In the case of a detached retina, the edges of the retina may appear irregular or undulating rather than smooth. This irregularity is often observed during a dilated eye examination rather than with a slit-lamp biomicroscope.
Visual acuity of 20/20 using the Snellen eye chart (Option C): Visual acuity may be affected in a detached retina, depending on the extent and location of the detachment. However, visual acuity alone cannot confirm a detached retina, as other factors such as refractive errors or cataracts can also affect visual acuity.
Lens and cornea appear intact during ophthalmoscope exam (Option D): While a detached retina may be visualized during an ophthalmoscope examination as a gray or whitish area behind the lens, the appearance of the lens and cornea being intact does not definitively diagnose a detached retina. A thorough dilated eye examination by an ophthalmologist is necessary for accurate diagnosis.
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