Patient use of Visine (tetrahydrozoline) masks Horner syndrome.
D005188:False Negative Reactions; D006732:Horner Syndrome / Q000175:diagnosis*; D006801:Humans; D007093:Imidazoles / Q000627:therapeutic use*; D008297:Male; D008875:Middle Aged; D009883:Ophthalmic Solutions / Q000627:therapeutic use*
D007093:Imidazoles; D009883:Ophthalmic Solutions; C005810:tetrahydrozoline