Objective Measurement of distance stereoacuity may be useful in assessing strabismic patients,especially those with intermittent exotropia.We made an assessment of simultaneous perception tested by synoptophore,and single monitor distance stereopsis test(SMDST) for distance stereoacuity in person.Methods We administered two tests to 30 normal volunteers(4–30 years of age) and 94 intermittent exotropia patients(4–33 years of age).Patients were divided into two groups in according to age,the near stereoacuity...