Review Question - QID 216521

A 15-month-old boy presents with his mother for his well-child exam. His mother is concerned about his vision, as she noticed him squinting while watching television. The patient was born at 39 weeks of gestation via spontaneous vaginal delivery. He is up to date with routine vaccinations. He is able to walk alone, speak 3 words, and scribble with a crayon. His temperature is 98.6°F (37.0°C), blood pressure is 80/55 mmHg, pulse is 105/min, and respirations are 25/min. On exam, his pupils are round and reactive to light. A photograph of his eyes is shown in Figure A. When focusing on the pediatrician's penlight, the patient's left eye wanders. However, when the right eye is covered, the left eye refocuses on the light. The rest of his neurological exam, including extraocular movements, is within normal limits. Which of the following is the most appropriate next step in management for this patient?