QuestionSBA
QuestionChoice
Episcleritis is another cause of red eye, which is typically not painful but may cause discomfort and tenderness over the inflamed area.
10027989
d
Episcleritis
QuestionChoice
Anterior uveitis often has a more insidious onset, with symptoms that develop gradually and persist over time. The characteristic features of anterior uveitis are a painful red eye, blurred vision, and photophobia. Patients may also present with constricted or irregular pupils due to synechiae, which are adhesions between the lens and iris.
10027987
b
Anterior uveitis
QuestionChoice
Conjunctivitis typically presents with a red, itchy, irritated eye with increased lacrimation and discharge. The type of discharge would depend on the underlying cause, whether that is allergic, viral, or bacterial in origin.
10027988
c
Conjunctivitis
QuestionChoice
Scleritis typically presents with a painful red eye and pain on eye movement. It is commonly associated with rheumatological conditions such as rheumatoid arthritis, so patients may also have systemic symptoms.
10027990
e
Scleritis
QuestionChoice
A subconjunctival haemorrhage occurs when blood vessels in the conjunctiva rupture and leak blood into the surrounding tissue. It characteristically causes a painless red eye. Subconjunctival haemorrhages are more likely to occur in individuals taking warfarin because it is an anticoagulant which increases the risk of bleeding. This diagnosis is further supported because of the sudden onset presentation, normal visual acuity, lack of pain or itching and normal pupillary reflexes.
10027986
a
Subconjunctival haemorrhage
Concept
Chapter
2693
6023
Differentials of red eye
Topic
140
Ophthalmology
17995
A 79-year-old woman presents to the GP with a 6-hour history of a red eye. She reports no changes in vision, no pain, and no itching. Her pupillary reflexes are normal. Her drug history shows she is taking warfarin.

Which of the following is the most likely diagnosis?
a