RGD uses the Human Disease Ontology (DO, https://disease-ontology.org/) for disease curation across species. RGD automatically downloads each new release of the ontology on a monthly basis. Some additional terms which are required for RGD's curation purposes but are not currently covered in the official version of DO have been added. As corresponding terms are added to DO, these custom terms are retired and the DO terms substituted in existing annotations and subsequently used for curation.
A primary angle-closure glaucoma characterized by acute closure of the anterior chamber angle by an intrinsic defect such that aqueous outflow is blocked and the intraocular pressure becomes suddenly inappropriately elevated threatening optic nerve damage and visual field loss; but that typically resolves spontaneously after several hours, even though it may recur. Interval angle-closure glaucoma has_symptom sudden pain, redness, headache, and blurry vision with haloes around lights that resolves spontaneously. Interval angle-closure glaucoma can be caused by exacerbation of chronic primary angle-closure glaucoma, typically by a medication or state that dilates the eyes and thus narrows the anterior chamber angle, blocking any aqueous outflow. (DO)