system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 46-year-old woman comes to the clinic complaining of right eye irritation. The eye is itchy and red. Discomfort has been relatively constant for the last 6 months, and nothing makes it better or worse. Past medical history is significant for hypertension, hyperlipidemia, and aggressive tooth decay, requiring several root canals and the removal and replacement of several teeth. She takes chlorthalidone, fluvastatin, and daily ibuprofen for tooth pain. She has smoked a pack of cigarettes daily since the age of 20 and drinks alcohol on the weekends. She does not use illicit drugs. She cannot provide any family history as she was adopted. Her temperature is 36.7°C (98°F), blood pressure is 135/65 mm Hg, pulse is 82/min, respiratory rate is 15/min, and BMI is 27 kg/m2. A thorough eye exam is performed and shows no foreign objects. Both eyes appear erythematous and infected. Schirmer test is abnormal.
Laboratory test
Complete blood count:
Hemoglobin    9.5 g/dL
Leukocytes 12,500/mm3
Platelets 155,000/mm3
ESR   60 mm/hr
Antinuclear antibody Positive
What is the best next step in the management of this patient?
assistant
Artificial tears