There are three classification systems for individuals with visual impairment that are used by education professionals. To be declared legally blind, an individual must have visual acuity of 20/200 or less, or have a field of vision restricted to 20 degrees or less at the widest point. However, this federal classification system is used primarily to determine eligibility for adult agency services.
have an eye for something. to be good at noticing a particular type of thing She has an eye for detail. He had an eye for the unusual and the exotic which made him a very good shopping companion. See also: an, eye, for, have.
1 If he says, I know something you don't know, then this could mean that he likes you and is playing a little guessing game. 2  Or it could just mean he's doing the usual social media thing of spreading information for fun, like the discovery of a new planet or finding the cure to cancer, etc.. Notice his eye contact. As already noted, a guy who is interested in you will look at you a lot, even if covertly. He may try to catch your eye or, if he's shy, he may suddenly turn his head away if you catch him checking you out.