Ten of the 18 patients (55.6%) were using topical Tetrahydrozoline hydrochloride (HCl), five (27.8%) were using the topical anesthetic drug 0.5% Proparacaine HCl, one was using (5.5%) topical Proparacaine HCl and Diclofenac sodium, and two workers (11.1%) were using topical Diclofenac sodium (Table 1).