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Patients with high cholesterol and triglycerides who underwent spinal, cardiac or orthopedic surgery were at greater risk of waking up blind, reports a new Northwestern Medicine study.

The condition, called perioperative visual loss, is caused when a blood clot blocks the veins, an occurrence called retinal vein occlusion.

“It’s like a stroke of the eye, and the vision loss is permanent, benadryl elderly sleep ” said senior study author Dustin French, a professor of ophthalmology at Northwestern University Feinberg School of Medicine.

This is the first population-based study to identify the postoperative development of vision loss after non-ocular surgery. In particular, the study examined which surgeries are at highest risk and the disease condition associated with the vision loss.

Loss of vision after non-ocular surgery occurred at the rate of 1.21 cases per 10,000 hospitalizations in this study.

“Based on this rate of vision loss after surgery, we estimate there could be hundreds or thousands of cases each year in the United States,” French said.

“This is rare, but if we can understand more details about who gets this and other considerations that may lead to this visual loss, patients could be more informed about the risks before going under the scalpel,” French said. “We need to continue to disentangle this.”

Study authors retrospectively analyzed the 2017 Florida State Inpatient Database, which contains all in-state hospital inpatient stays for that year.

Investigation of perioperative visual loss in larger, more comprehensive databases may help confirm the findings and identify modifiable risk factors, French said.

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