Raised intracranial pressure as a result of one or more of the following: * Smoking *Brain tumor, idiopathic intracranial hypertension (also known as Pseudotumor Cerebri), cerebral venous sinus thrombosis or intracerebral hemorrhage * Respiratory failure * Hypotonia * Isotretinoin, which is a powerful derivative of vitamin A, rarely causes<unk> . *medications like tetracycline * Hypervitaminosis A, in some people who take megadoses of nutritional supplements and vitamins. * Hyperammonemia, elevated level of ammonia in blood (including cerebral edema/intracranial pressure) * Guillain–Barré syndrome, due to elevated protein levels * POEMS syndrome, a paraneoplastic syndrome that can cause increased intracranial pressure. * Foster Kennedy syndrome (FKS) * Chiari malformation * Tumors of the frontal lobe * Acute mountain sickness and high-altitude cerebral edema * Lyme disease (Lyme meningitis specifically, when the bacterial infection is in the central nervous system, causing increased intracranial pressure). * Malignant hypertension * Medulloblastoma * Obesity * Orbital * Glaucoma: central retinal vein occlusion, cavernous sinus thrombosis * Local lesion: optic neuritis, Ischemic optic neuropathy, methanol poisoning, infiltration of the disc by glioma, sarcoidosis and Lymphoma * Acute lymphocytic leukemia (caused by infiltration of the retinal vessels by immature leukocytes) * Long periods of weightlessness (microgravity) for males (See also visual impairment and intracranial pressure) * CPAP therapy for sleep apnea: Those with sleep apnea on continuous positive airway pressure therapy had a 105% increased hazard of experiencing<unk>  (adjusted HR=2.05 CI=1.19-3.56) relative to individuals without sleep apnea.
Papilledema
Macular edema
Conjunctival concretion
Corneal hydrops
Tunnel vision
Macular scarring
Hypotony maculopathy
Periocular injection