Diagnosing Skin, Eye, Ear, and Throat Disorders

An 86-year-old widowed female is brought to the office by her daughter-in-law. The patient complains of constant tearing and an itchy, burning sensation in both eyes. The patient states this is not a new problem, but it has worsened in the past week and is affecting her vision. The patient complains that her eyes are dry. She thinks the problem must be caused by one of her medications. Her patient medical history is positive for hypertension, atrial fibrillation, and heart failure. She has an allergy to erythromycin that causes rash and elevated liver enzymes. Medications currently prescribed include Furosemide 40 milligrams po twice a day, diltiazem 240 milligrams po daily, lisinopril 20 milligrams po daily, and warfarin 3 milligrams po daily. The physical examination reveals a frail older female with some facial dryness and slight scaling. Her visual acuity is 20/60 OU, 20/40 OD, 20/60 OS. The eyelids are erythematous and edematous with yellow crusting around the lashes. Sclera are injected, conjunctiva are pale, and pupils are equal and reactive to light and accommodation.