**Core Concept**
Sulphonamide allergy is a significant concern in patients with a history of hypersensitivity reactions to these antimicrobials. This allergy is often cross-reactive with other medications that contain sulphonamide moieties, leading to potential severe adverse reactions.

**Why the Correct Answer is Right**
Brinzolamide is a carbonic anhydrase inhibitor used topically in the treatment of glaucoma. It contains a sulphonamide group, which is structurally similar to the sulphonamide antimicrobials that cause allergic reactions. Therefore, patients with a history of sulphonamide allergy should avoid Brinzolamide to prevent potential cross-reactivity and severe allergic reactions.

**Why Each Wrong Option is Incorrect**
**Option A:** Levobunolol is a non-selective beta-blocker used in the treatment of glaucoma. It does not contain a sulphonamide group and is not contraindicated in patients with sulphonamide allergy.

**Option B:** Bimatoprost is a prostaglandin analogue used in the treatment of glaucoma. It does not contain a sulphonamide group and is not contraindicated in patients with sulphonamide allergy.

**Option D:** Brimonidine is an alpha-2 adrenergic agonist used in the treatment of glaucoma. It does not contain a sulphonamide group and is not contraindicated in patients with sulphonamide allergy.

**Clinical Pearl / High-Yield Fact**
It is essential to note that sulphonamide allergy can be cross-reactive with other medications that contain sulphonamide moieties, such as sulfasalazine, sulfamethoxazole, and sulfadiazine. Patients with a history of sulphonamide allergy should inform their healthcare providers about their allergy to ensure safe medication use.

**✓ Correct Answer: C. Brinzolamide. Brinzolamide is contraindicated in patients with sulphonamide allergy.**