Branch Retinal Vein Occlusion
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Although some patients may be asymptomatic, a branch retinal vein occlusion (BRVO) usually presents with central or paracentral impaired vision (+/- distortion). The main risk factors, other than age (arterosclerosis), are hypertension and diabetes. Less common aetiologies include hyerviscosity conditions which interfere with retinal blood flow eg polycythaemia, chronic leukaemia, sickle cell disease, or diseases which result in inflammation of the retinal veins (periphlebitis) such as sarcoidosis. 

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Core Principles

1. Ocular Anatomy

2. Ophthalmic History

3. Measuring Visual Acuity

4. External Inspection / Eyelids

5. Everting The Eyelids

6. Anterior Segment

7. Pupillary Reflexes (and Dilatation)

8. Ocular Motility

9. Visual Fields

10. Direct Ophthalmoscopy

Ophthalmology in Practice

1. Red Eye Introduction

2. Red Eye Diagnosis

3. Visual Failure Introduction

4. Gradual Loss of Vision

5. Sudden Loss of Vision

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