Ophthalmology An elderly man presented with a painful red eye, and on examination shows the pupil dilated and fixed, what is the next line of investigation? A Tonometry B Visual evoked potential C Retinal angiogram D Slit lamp examination 💡 Explanation An elderly man presented with a painful red eye, and on examination shows the pupil dilated and fixed, what is the next line of investigation? ✓ Correct Answer: A. Tonometry