A 72-year-old woman with dense nuclear sclerotic cataract and mild dry eye syndrome (Schirmer test 8 mm/5 min) is scheduled for phacoemulsification. Which topical anti-inflammatory agent is the drug of choice for managing postoperative inflammation while minimizing corneal epithelial toxicity?

Explanation

## Postoperative Anti-inflammatory Management in Cataract Surgery ### Rationale for Prednisolone Acetate 1% **Key Point:** Prednisolone acetate 1% is the preferred topical corticosteroid for post-operative inflammation in cataract surgery because it achieves superior aqueous humor penetration (20–30 times higher than dexamethasone) and provides robust anti-inflammatory control with acceptable safety in short-term perioperative use. **High-Yield:** Prednisolone acetate 1% is the standard of care for cataract surgery inflammation. Its acetate ester formulation enhances corneal penetration, making it ideal for anterior segment inflammation. In patients with dry eye, it is safer than NSAIDs (which can impair corneal healing) and more potent than fluorometholone. ### Comparative Aqueous Humor Penetration | Agent | Aqueous Penetration | Potency | |-------|---------------------|----------| | Prednisolone acetate 1% | Excellent (20–30× dexamethasone) | High | | Dexamethasone 0.1% | Poor (low ester penetration) | High (systemic) | | Fluorometholone 0.1% | Moderate | Lower (safer long-term) | | Ketorolac 0.5% | Good | Moderate (NSAID) | ### Dosing Schedule for Cataract Surgery 1. **Preoperative:** 4 times daily × 3 days before surgery 2. **Intraoperative:** Instilled at end of surgery 3. **Postoperative:** - Week 1: Every 2 hours (while awake) - Week 2–3: 4 times daily - Week 4–6: Taper over 2–4 weeks ### Why Prednisolone Acetate in Dry Eye Patients? **Clinical Pearl:** NSAIDs (like ketorolac) impair corneal epithelial healing and are contraindicated in dry eye. Prednisolone acetate, while a steroid, provides superior anti-inflammatory control without this risk and can be safely tapered after 6 weeks. Fluorometholone is weaker and insufficient for robust post-operative inflammation control. **Warning:** Prolonged corticosteroid use (>4 weeks) increases risk of steroid-induced glaucoma and cataract progression in the fellow eye. Taper is essential. ### Mechanism - Inhibits phospholipase A~2~ → reduces prostaglandin and leukotriene synthesis - Suppresses T-cell and B-cell proliferation - Reduces vascular permeability and leukocyte infiltration [cite:AAO Cataract and IOL Surgery Guidelines 2023; Gerstenblith et al., Ophthalmology 2022]