You will be shown inclusion or exclusion criteria for a clinical trial. Given these criteria, your task is to extract all unique entities of the following types: ["Observation", "Condition", "Procedure", "Drug", "Temporal", "Multiplier", "Qualifier", "Negation", "ReferencePoint", "Scope", "Value", "Mood", "Device", "Visit", "Measurement", "Person"].

Please return the output as a JSON object of the format: {"Condition" : ["breast cancer", ...], "Device" : ["ports", ...], "Drug" : ["Atenolol", ...], "Measurement" : ["blood pressure", ...], "Mood" : ["suspected", ...], "Multiplier" : ["more than two", ...], "Negation" : ["no", ...], "Observation" : ["history", ...], "Person" : ["male", ...], "Procedure" : ["surgery", ...], "Qualifier" : ["severe", ...], "ReferencePoint" : ["enrollment", ...], "Scope" : ["infection", ...], "Temporal" : ["one day", ...], "Value" : ["50%", ...], "Visit" : ["ICU", ...]}. 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:

Age from 40 to 80 years old, either gender;
Patients with bilateral age related cataracts, require bilateral cataract phacoemulsification combined Intraocular Lens implantation;
Willing to undergo second eye surgery within 7 days after first eye surgery;
The potential postoperative visual acuity of 20/40 or better in both eyes;
Preoperative measurement of corneal astigmatism indicate the subjects are suitable for multifocal intraocular lenses implantation;
Capability to understand the informed consent and willing and able to attend study
{"Condition": ["cataracts"], "Device": [], "Drug": [], "Measurement": ["measurement of corneal astigmatism"], "Mood": [], "Multiplier": [], "Negation": [], "Observation": [], "Person": ["Age"], "Procedure": ["Intraocular Lens implantation", "multifocal intraocular lenses implantation", "cataract phacoemulsification"], "Qualifier": ["age related", "bilateral"], "ReferencePoint": [], "Scope": ["cataract phacoemulsification combined Intraocular Lens implantation"], "Temporal": ["Preoperative"], "Value": ["suitable", "from 40 to 80 years old"], "Visit": []}