Eyewear comprising: at least one lens; a first and second earstem (14, 16) removably attached to the lens; a first retention assembly (20, 200, 300, 400) comprising a first engagement protrusion (36, 206, 306, 406) attached to the at least one lens and a first coupling mechanism (30, 202, 302, 402) attached to an anterior end of the first earstem, the first coupling mechanism (30, 202, 302, 402) configured to receive the first engagement protrusion (36, 206, 306, 406), and a second retention assembly (22, 200, 300, 400) comprising a second engagement protrusion (36, 206, 306, 406) attached to the at least one lens and a second coupling mechanism (30, 202, 302, 402) attached to an anterior end of the second earstem, the second coupling mechanism (30, 202, 302, 402) configured to receive the second engagement protrusion (36, 206, 306, 406), the first and second coupling mechanisms (30, 202, 302, 402) each comprising: a housing (32, 230) configured to receive the respective first and second engagement protrusions (36, 206, 306, 406); a lever mechanism (34, 204, 304, 404) being operative to move between open and closed positions for disengaging or engaging with the respective first and second engagement protrusions (36, 206, 306, 406); and a biasing mechanism configured to urge the lever mechanism towards a closed position, wherein the housing (32, 230), the lever mechanism (34, 204, 304, 404), and the biasing mechanism of the first coupling mechanism are configured to allow the first earstem to be decoupled, via the first engagement protrusion (36, 206, 306, 406), from the at least one lens and the second coupling mechanism; and wherein the housing (32, 230), the lever mechanism (34, 204, 304, 404), and the biasing mechanism of the second coupling mechanism are configured to allow the second earstem to be decoupled, via the second engagement protrusion (36, 206, 306, 406), from the at least one lens and the first coupling mechanism. at least one lens; a first and second earstem (14, 16) removably attached to the lens; a first retention assembly (20, 200, 300, 400) comprising a first engagement protrusion (36, 206, 306, 406) attached to the at least one lens and a first coupling mechanism (30, 202, 302, 402) attached to an anterior end of the first earstem, the first coupling mechanism (30, 202, 302, 402) configured to receive the first engagement protrusion (36, 206, 306, 406), and a second retention assembly (22, 200, 300, 400) comprising a second engagement protrusion (36, 206, 306, 406) attached to the at least one lens and a second coupling mechanism (30, 202, 302, 402) attached to an anterior end of the second earstem, the second coupling mechanism (30, 202, 302, 402) configured to receive the second engagement protrusion (36, 206, 306, 406), the first and second coupling mechanisms (30, 202, 302, 402) each comprising: a housing (32, 230) configured to receive the respective first and second engagement protrusions (36, 206, 306, 406); a lever mechanism (34, 204, 304, 404) being operative to move between open and closed positions for disengaging or engaging with the respective first and second engagement protrusions (36, 206, 306, 406); and a biasing mechanism configured to urge the lever mechanism towards a closed position, a housing (32, 230) configured to receive the respective first and second engagement protrusions (36, 206, 306, 406); a lever mechanism (34, 204, 304, 404) being operative to move between open and closed positions for disengaging or engaging with the respective first and second engagement protrusions (36, 206, 306, 406); and a biasing mechanism configured to urge the lever mechanism towards a closed position, wherein the housing (32, 230), the lever mechanism (34, 204, 304, 404), and the biasing mechanism of the first coupling mechanism are configured to allow the first earstem to be decoupled, via the first engagement protrusion (36, 206, 306, 406), from the at least one lens and the second coupling mechanism; and wherein the housing (32, 230), the lever mechanism (34, 204, 304, 404), and the biasing mechanism of the second coupling mechanism are configured to allow the second earstem to be decoupled, via the second engagement protrusion (36, 206, 306, 406), from the at least one lens and the first coupling mechanism.