Orthoptic treatment for exotropia applying spheroprismatic correction and low-energy helium- neon laser stimulation possesses a series of advantages to the surgical treatment. Prismatic correction has been already applied for exotropia earlier and has proven to be quite effective treating the disease and its minor complications. But in more severe cases when exotropia is accompanied by hyperphoria exceeding 3 pr Dptr and cyclotropia, prismatic correction method is not helpful enough. To cure the most complicated cases of exotropia low-energy helium- neon laser was successfully used for the first time as the only means capable of eliminating hypertropia and cyclotropia. The novelty and high efficiency of the method enables ophthalmologists to approach concomitant squint not as an eye muscular deterioration but as physiological reaction of the visual analyzer to suppress diplopia. Thus the method eliminates the cause of squint.