Final answer:
The symptoms of throbbing eye pain, irregular pupil shape, photophobia, and redness suggest acute angle-closure glaucoma, which is a medical emergency and requires immediate attention, especially given that George is over 40 and at greater risk.
Step-by-step explanation:
Based on the symptoms provided, throbbing pain in the left eye, irregular pupil shape, marked photophobia, and redness around the iris, it is highly suggestive of an acute ocular condition that may require immediate medical attention. While this is not an exhaustive diagnosis and further examination would be required, one possible diagnosis for these symptoms could be acute angle-closure glaucoma.
This is a condition where the intraocular pressure within the eye rises suddenly due to a blockage of the drainage canals, leading to the symptoms described. Particularly relevant is the notion that people over 40 years of age are at greater risk of developing glaucoma and should have their intraocular pressure tested routinely to spot such incidents early on.
Given the urgency associated with glaucoma, as high intraocular pressure can lead to blindness, it is important that George seeks immediate medical attention, potentially from an ophthalmologist who can conduct a thorough examination, including an intraocular pressure test, and provide the appropriate treatment.