Is acute angle closure glaucoma painful?

Very painful: Acute angle closure glaucoma is a painful and potentially blinding disease, that is responsible for about 10% of all glaucomas. It is caused by the iris (color of the eye) blocking the drain on the inside of the eyeball. This leads to sudden and severe pressure elevation, with ensuing pain and cloudy vision. If not treated promptly, it will result in permanent blindness.

Usually: This involves the anatomical obstruction of the interior fluid outflow of the eye. The pressure goes to rather high levels, the pupil becomes fixed (unreactive) in mid-dilation, the cornea gets steamy and the vision drops, and the eye gets quite red. Pain is usual and occasionally is referred to the GI tract. This is an eye emergency and needs ophthalmological treatment quickly.

Yes: A sudden rise in Intraocular pressure causes significant pain. The pain can be so intense as to cause nausea & vomiting, severe headache, photophobia, and loss of vision. Acute angle closure glaucoma is an ocular emergency requiring prompt diagnosis & treatment.