Question

What can occur in allergic conjunctivitis?

Options

• Permanent blindness and cataracts

• Redness and watering of the eyes

• Corneal scarring and vision loss

• Glaucoma and increased intraocular pressure

Answer 1

Allergic conjunctivitis results in redness and watering of the eyes. This occurs when histamine released from mast cells in the conjunctiva stimulates H1 receptors, causing local inflammation, vasodilation, and increased lacrimal secretion. The affected individual experiences itchy, red, watery eyes, which are characteristic signs of allergic conjunctivitis and are typically temporary and resolve once the allergen exposure ends.