A 5-day-old baby has a purulent discharge from both eyes with marked lid swelling. What is the correct action? A. Topical antibiotic drops and review in three days B. Reassure; neonatal sticky eye is common C. Same-day referral, and treat the mother and her partner D. Saline bathing and review in a week ANSWER: C — same-day referral, with treatment of the mother and partner. Why: this is OPHTHALMIA NEONATORUM. Gonococcal infection can perforate the cornea within DAYS, so it is sight-threatening and cannot wait. The organism was acquired from the birth canal, so the mother has an untreated sexually transmitted infection. Treating the baby's eye alone leaves her infected and risks recurrence in the next pregnancy. A and D delay treatment of an emergency.

Why does trachoma cause blindness in adults when the infection occurs in childhood? ANSWER: because the damage accumulates through scarring over decades. 1. REPEATED infection in childhood — reinfection is what matters, not a single episode. 2. Chronic inflammation of the upper tarsal conjunctiva. 3. SCARRING contracts the tarsal plate over years. 4. The lid margin turns inward — TRICHIASIS. 5. In-turned lashes abrade the cornea with every blink; the cornea opacifies and the blindness is IRREVERSIBLE. CONSEQUENCE FOR CONTROL: prevention must target children while surgery targets adults — in the same community, at the same time, on different people.

What does SAFE stand for, and why are all four components required? ANSWER: S SURGERY for trichiasis — saves sight in those already scarred A ANTIBIOTICS, given to the whole community to shrink the reservoir F FACIAL CLEANLINESS — interrupts spread by hands, cloths and flies E ENVIRONMENTAL improvement — water and sanitation, reducing flies WHY ALL FOUR: S and A treat the people damaged or infected TODAY. They do nothing about the conditions that let the organism circulate, so reinfection follows and the programme never ends. F and E change those conditions and make the gains permanent. SAME LOGIC AS DEWORMING: the drug treats the child, not the soil.

A patient has a painless, firm lump within the upper eyelid that has been present for six weeks. It is not tender and the eye is white. What is the most likely diagnosis? A. Stye (hordeolum) B. Chalazion C. Preseptal cellulitis D. Basal cell carcinoma ANSWER: B — chalazion. Why: PAINLESS, CHRONIC and WITHIN THE LID is the chalazion pattern — a blocked meibomian gland forming a sterile granuloma. Antibiotics do little because it is not primarily an infection. A: a stye is PAINFUL, acute and at the lid MARGIN. C: cellulitis is acute with redness, swelling and systemic upset. BUT NOTE: a lump that RECURS at the same site, ulcerates, bleeds or destroys lashes suggests malignancy and needs specialist assessment rather than another incision.

Which features take a red eye out of the "probably benign" category and require same-day assessment? ANSWER: REDUCED VISUAL ACUITY Conjunctivitis does not reduce vision beyond what wiping the discharge clears. SIGNIFICANT PAIN As opposed to grittiness or irritation. PHOTOPHOBIA ABNORMAL PUPIL Or a hazy cornea. CONTACT LENS WEAR A painful red eye in a lens wearer is microbial keratitis until proven otherwise. ANY ONE of these means same-day assessment, not topical antibiotics and a review appointment.

A patient with blepharitis returns saying the lid hygiene "did not work" — symptoms improved, so he stopped, and they came back. What is the counselling point? ANSWER: lid hygiene CONTROLS blepharitis; it does not cure it. Blepharitis is a chronic condition. Warm compresses and cleaning the lid margins suppress symptoms while they are continued, and symptoms return when they stop. Patients who are not told this conclude the treatment failed, abandon it, and cycle through repeated courses of antibiotics that were never going to help. LEARNING POINT: for chronic conditions, explaining that treatment is ongoing IS part of the treatment.