Plusoptix S08 sensitivity in detecting strabismus as amblyogenic risk factor.

PURPOSE

To evaluate the sensitivity of photoscreener Plusoptix S08 in screening strabismus.

METHODS

Eighty-three consecutive patients were examined by a single expert to determine the type and amount of the deviation. Then photoscreening was done for all the patients via Plusoptix S08 photoscreener (Plusoptix GmbH, Nuremberg, Germany) on the same day, using the default software for referring the patients.

RESULTS

The age range was between 6 months and 40 years. The overall sensitivity of the device to detect strabismus is 70%; it was 25% for exophoria, 67% for esotropia, 73% for exotropia, and 89% in patients who had mixed strabismus. Regarding degree of deviation, sensitivity was 46% in deviations less than 30 prism diopters (PD) and rises while the degree of deviation increases.

CONCLUSIONS

Our research shows that Plusoptix should not be used solely in evaluating strabismus because its sensitivity decreases significantly specially in esotropic patients with less than 30 PD deviations.