Influence of Various Factors on Results on Phenylephrine Test

Abstract

Phenylephrine test is one of the main factors determining the possibility of performing superior tarsal muscle resection. However, the influence of various factors on its result remains unexplored.Aim. To evaluate the effect of patient age, degree of ptosis, and levator muscle function on the result of the phenylephrine test.Patients and methods. 45 patients were examined (64 eyelids). The following examinations were performed for all patients: assessment of the degree of ptosis, levator muscle function and the phenylephrine test.Results. Age and the degree of ptosis do not affect the results of the phenylephrine test. Reduced levator muscle function leads to a decrease of the phenylephrine test results.Conclusion. The phenylephrine test remains an important criteria for patient selection for the planning superior tarsal muscle resection. Levator muscle function does affect the phenylephrine test result.