) providing data indicative of at least said outline and said supplemental locations; whereby said data is useable for shaping lenses of at least one customized add-on unit and manufacturing in a non-industrial scale the at least one an add-on unit having, each, a size and shape that substantially matches the eyeglasses. The invention further provides for a method for imaging eyeglasses having lenses, and obtaining data indicative of at least an outline of the eyeglasses and designated locations associated with the outline, comprising: (i) placing the eyeglasses for imaging; (ii) acquiring and displaying an image of the eyeglasses using a short focal length imaging device; (iii) calculating and displaying an editable outline for each eyepiece of the eyeglasses, such that the editable outline can be compared to a respective eyepiece of the image; (iv) calculating supplemental locations associated with the outline for manufacturing holes and/or slots that anchor clip-on parts that include bridge and legs; and (v) providing data indicative of at least said outline and said supplemental locations; whereby said data is useable for shaping clip-on lenses and shaping holes or slots in the clip-on lenses in order to anchor the clip-on parts to the clip-on lenses and to manufacture in a non-industrial scale at least one customized clip-on having, each, a size and shape that substantially matches the eyeglasses. Still further, the invention provides for a method for manufacturing in a non-industrial scale and substantially in real-time at least one customized clip-on having, each, size and shape that substantially matches an eyeglasses frame, the 