Process for testing the feasibility of a pair of spectacles carried out by an electronic and/or computer device, for the purpose of making several feasible pairs of spectacle frames available to an identified wearer, this pair of spectacles comprising an identified physical spectacle frame having at least one eye wire suitable for receiving a lens, comprising a step consisting in: a) acquiring a range of values of at least one first parameter (PD, HD, Ps, Pc) relating to any spectacle wearer, in the whole of which range it is desired to ensure the feasibility of the pair of spectacles, characterized in that it further comprises steps consisting in: b) acquiring a range of values of at least one second parameter (PD, HD, Ps, Pc) which relates to any spectacle wearer and which is different from each first parameter, in the whole of which range it is desired to ensure the feasibility of the pair of spectacles, c) verifying, on the basis of the shape of the eye wire and for a characteristic number of values of each second parameter (PD, HD, Ps, Pc), that the pair of spectacles is feasible irrespective of the value of each first parameter (PD, HD, Ps, Pc) included in its range so that, when the identified wearer wishes to buy a pair of spectacles based on said spectacle frame, it is possible to confirm to him/her if said pair of spectacles is feasible by determining the values of said first and second parameters and by verifying that the value of the first parameter is within said range acquired in step a) and the value of the second parameter is within said range acquired in step b) and is such that the pair of glasses is feasible within the meaning of step c), wherein said first and second parameters (PD, HD, Ps, Pc) are ophthalmic, morphological or geometric-morphological parameters characterizing spectacle wearers, wherein said first parameters include the spherical refractive power (Ps) and the cylindrical refractive power (Pc), and wherein said second parameter(s) comprise(s) pupillary height and/or pupillary half-distance. a) acquiring a range of values of at least one first parameter (PD, HD, Ps, Pc) relating to any spectacle wearer, in the whole of which range it is desired to ensure the feasibility of the pair of spectacles, characterized in that it further comprises steps consisting in: b) acquiring a range of values of at least one second parameter (PD, HD, Ps, Pc) which relates to any spectacle wearer and which is different from each first parameter, in the whole of which range it is desired to ensure the feasibility of the pair of spectacles, c) verifying, on the basis of the shape of the eye wire and for a characteristic number of values of each second parameter (PD, HD, Ps, Pc), that the pair of spectacles is feasible irrespective of the value of each first parameter (PD, HD, Ps, Pc) included in its range so that, when the identified wearer wishes to buy a pair of spectacles based on said spectacle frame, it is possible to confirm to him/her if said pair of spectacles is feasible by determining the values of said first and second parameters and by verifying that the value of the first parameter is within said range acquired in step a) and the value of the second parameter is within said range acquired in step b) and is such that the pair of glasses is feasible within the meaning of step c), wherein said first and second parameters (PD, HD, Ps, Pc) are ophthalmic, morphological or geometric-morphological parameters characterizing spectacle wearers, b) acquiring a range of values of at least one second parameter (PD, HD, Ps, Pc) which relates to any spectacle wearer and which is different from each first parameter, in the whole of which range it is desired to ensure the feasibility of the pair of spectacles, c) verifying, on the basis of the shape of the eye wire and for a characteristic number of values of each second parameter (PD, HD, Ps, Pc), that the pair of spectacles is feasible irrespective of the value of each first parameter (PD, HD, Ps, Pc) included in its range so that, when the identified wearer wishes to buy a pair of spectacles based on said spectacle frame, it is possible to confirm to him/her if said pair of spectacles is feasible by determining the values of said first and second parameters and by verifying that the value of the first parameter is within said range acquired in step a) and the value of the second parameter is within said range acquired in step b) and is such that the pair of glasses is feasible within the meaning of step c), wherein said first and second parameters (PD, HD, Ps, Pc) are ophthalmic, morphological or geometric-morphological parameters characterizing spectacle wearers, wherein said first parameters include the spherical refractive power (Ps) and the cylindrical refractive power (Pc), and wherein said second parameter(s) comprise(s) pupillary height and/or pupillary half-distance.