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flag Elevating head while sleeping raises eye pressure in glaucoma patients, possibly worsening nerve damage.

flag A study of 144 people with glaucoma finds that sleeping with the head elevated using two pillows increases eye pressure by an average of 1.61 mm Hg compared to lying flat, potentially worsening optic nerve damage. flag Researchers link this rise to neck flexion compressing the jugular vein, reducing blood flow and fluid drainage from the eye. flag Ultrasound scans on 20 healthy volunteers showed narrowed jugular veins when the head was raised. flag The findings suggest sleeping without pillows or using just one thin pillow may help manage intraocular pressure, though further research is needed to confirm benefits.

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