## Management and Risk Factors in Retinal Detachment ### Understanding the Correct Answer **Key Point:** Scleral buckling is NOT the preferred surgical approach for all cases of rhegmatogenous retinal detachment. The choice between scleral buckling, vitrectomy, and pneumatic retinopexy depends on multiple factors including break location, extent of detachment, lens status, and vitreous clarity. **High-Yield:** Modern practice increasingly favors **pars plana vitrectomy (PPV)** for: - Macula-off detachments - Multiple or large breaks - Proliferative vitreoretinopathy (PVR) - Pseudophakic/aphakic eyes (as in this case) Scleral buckling remains a valid option but is not universally preferred. The statement that it is "the preferred surgical approach for all cases" is **FALSE**. ### Surgical Approach Selection | Approach | Indications | Advantages | Limitations | |----------|-------------|-----------|-------------| | **Scleral Buckling** | Macula-on, single break, phakic eye | Preserves accommodation, lower cost | Requires clear media, not suitable for PVR | | **Pars Plana Vitrectomy** | Macula-off, multiple breaks, PVR, pseudophakic | Excellent for complex cases, allows internal tamponade | Accelerates cataract progression | | **Pneumatic Retinopexy** | Single break, superior location, macula-on | Minimally invasive, outpatient | Requires strict positioning, contraindicated in inferior breaks | ### Why the Other Statements Are Correct **Option 0 — Lattice Degeneration:** - **Definition:** Localized area of retinal thinning with vitreous liquefaction - **Risk:** Present in ~8% of population; increases RD risk 5–6 fold - **Mechanism:** Vitreous traction on thin retina → break formation - This statement is **CORRECT**. **Option 1 — Pneumatic Retinopexy Contraindication:** - **Principle:** Gas bubble rises; cannot tamponade inferior breaks - **Requirement:** Break must be in superior or equatorial region - **Positioning:** Patient must maintain strict head positioning (face-down or face-forward) - This statement is **CORRECT**. **Option 3 — Post-Cataract Surgery RD Risk:** - **Incidence:** ~0.5–2% after cataract surgery - **Mechanisms:** - Vitreous loss during surgery - Zonular damage → vitreous traction - Posterior capsule rupture - Increased PVD risk - This statement is **CORRECT**. ### Clinical Presentation in This Case ```mermaid flowchart TD A[Post-cataract surgery patient]:::outcome --> B[Flashing lights + floaters]:::outcome B --> C[C-shaped superior detachment]:::outcome C --> D{Assess break location & extent}:::decision D -->|Macula-on, single break| E[Pneumatic retinopexy or scleral buckle]:::action D -->|Macula-off or multiple breaks| F[Pars plana vitrectomy]:::action D -->|Inferior break| G[Scleral buckle or vitrectomy]:::action E --> H[Urgent surgery]:::urgent F --> H G --> H ``` **Clinical Pearl:** In pseudophakic eyes (post-cataract surgery), vitrectomy is increasingly preferred because: - No accommodation to preserve - Better visualization through IOL - Superior outcomes in complex cases - Can address concurrent vitreous pathology [cite:Parson's Diseases of the Eye 22e Ch 11; Boyd & Malone, Retinal Detachment Surgery]
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