Does elevated intraocular pressure cause retinal detachment?

No: Glaucoma doesn't cause a retinal detachment, but a retinal detachment can cause high eye pressure and glaucoma (i.e. Schwartz syndrome, also hemorrhagic rd, other). However, usually the eye pressure is low if there is a large retinal detachment.

No: These are two unrelated conditions. Elevated pressure in the eye can cause permanent blindness, but does not in any way cause the retina to detach.