Important Notes for Competitive Exams Diagnostic Tests for Eye Conditions 1. Tonometry ✅ Definition: Measures intraocular pressure (IOP) to diagnose and monitor glaucoma.✅ Normal IOP: 10-21 mmHg✅ Types: 2. Snellen’s Chart ✅ Definition: Measures visual acuity (sharpness of vision).✅ Procedure: Infections and Inflammatory Conditions of the Eye 1. Blepharitis ✅ Definition: Chronic inflammation of the eyelid margin.✅ Causes: Staphylococcal infection, seborrheic dermatitis, Demodex mites.✅ Symptoms: 2. Stye (Hordeolum) ✅ Definition: