A device adapted to a pair of eyeglasses, comprising: a means for collecting eye data (110, 120), and an adaption frame configured to retain the means for collecting eye data, wherein the adaption frame comprises an adaption unit configured to secure the adaption frame onto the pair of eyeglasses and/or remove the adaption frame from the pair of eyeglasses, wherein the adaption unit comprises a central positioning means configured to secure the adaption frame to a central cross member of the pair of eyeglasses and/or remove the adaption frame from the central cross member, wherein the central positioning means comprises an accommodating portion configured to accommodate the central cross member of the pair of eyeglasses, wherein the accommodating portion is formed by at least one pair of fasteners fastened to the adaption frame, characterized in that the at least one pair of fasteners are arranged vertically in a direction perpendicular to the central cross member, so that the central cross member of the pair of eyeglasses is placed in a space formed between the at least one pair of fasteners,wherein the accommodating portion further comprises a blocking member for blocking the movement of the central cross member, wherein the blocking member is secured onto the at least one pair of fasteners in a manner of being penetrated by the at least one pair of fasteners, wherein the accommodating portion is formed by a supporting protrusion provided on the adaption frame, wherein the supporting protrusion is provided with a slot extending in a lateral direction, wherein the slot comprises flexible cushioning members (166a, 166b) arranged on two sides, extending in the lateral direction, of the slot, wherein the adaption frame comprises a retaining portion for retaining the device on a nose bridge. a means for collecting eye data (110, 120), and an adaption frame configured to retain the means for collecting eye data, wherein the adaption frame comprises an adaption unit configured to secure the adaption frame onto the pair of eyeglasses and/or remove the adaption frame from the pair of eyeglasses, wherein the adaption unit comprises a central positioning means configured to secure the adaption frame to a central cross member of the pair of eyeglasses and/or remove the adaption frame from the central cross member, wherein the central positioning means comprises an accommodating portion configured to accommodate the central cross member of the pair of eyeglasses, wherein the accommodating portion is formed by at least one pair of fasteners fastened to the adaption frame, characterized in that the at least one pair of fasteners are arranged vertically in a direction perpendicular to the central cross member, so that the central cross member of the pair of eyeglasses is placed in a space formed between the at least one pair of fasteners,wherein the accommodating portion further comprises a blocking member for blocking the movement of the central cross member, wherein the blocking member is secured onto the at least one pair of fasteners in a manner of being penetrated by the at least one pair of fasteners, wherein the accommodating portion is formed by a supporting protrusion provided on the adaption frame, wherein the supporting protrusion is provided with a slot extending in a lateral direction, wherein the slot comprises flexible cushioning members (166a, 166b) arranged on two sides, extending in the lateral direction, of the slot, wherein the adaption frame comprises a retaining portion for retaining the device on a nose bridge.