<prompt> All the following signs could result from infection with in the right cavernous sinus except-Constricted pupil in response to lightEngorgement of the retinal veins upon ophthalmoscopic examinationPtosis of the right eyelidRight ophthalmoplegia  <response>: Cavernous sinus thrombosis Patient develops severe pain in the eye and forehead of the involved side. Conjunctiva is swollen and congested. Proptosis Ptosis due to 3rd N.Palsy Dilated pupil due to 3rd N involvement Retinal veins shows congestion. Papilloedema Fundus may be normal Ref: Khurana 7the p.428 