You will be shown an abstract from a biomedical research paper. Given this abstract, your task is to extract all unique entities of the following types: ["Disease", "Chemical"].

Please return the output as a JSON object of the format: {"Chemical" : ["Naloxone", ...], "Disease" : ["Hypotensive", ...]}. The keys should be entity types and values should be lists of extracted entities belonging to the corresponding type. If you cannot find entities belonging to a specific type, the value should be [].

Only output the JSON object and do not include any additional text.

Abstract:

Central vein thrombosis and topical dipivalyl epinephrine. A report is given on an 83-year-old female who acquired central vein thrombosis in her seeing eye one day after having started topical medication with dipivalyl epinephrine for advanced glaucoma discovered in the other eye. From present knowledge about the effects of adrenergic eye drops on ocular blood circulation, it is difficult to suggest an association between the two events, which may be coincidental only.
{"Chemical": ["dipivalyl epinephrine"], "Disease": ["glaucoma", "vein thrombosis"]}