Case: Red eyes (A)

Read the following description and then answer 6 questions related to this optometry case. You'll receive the answers and explanations after you've responded to all the questions. Good luck! 

A 21-year-old male patient visits your practice for a routine eye examination. He occasionally experiences itchy and red eyes. The visual acuity in both eyes is excellent without the need for correction. The patient is generally healthy and uses asthma inhalers sporadically.