Clinical Assessment and Diagnosis
Core Concepts
Clinical assessment in fundus photography involves evaluating image quality, identifying anatomical landmarks, and recognizing abnormalities. You must be able to assess exposure, focus, and centration. Understanding the appearance of common pathologies such as drusen, hemorrhages, exudates, and nevi is crucial. Additionally, knowing when to escalate to a physician is part of the assessment process.
Traps in Questions
A common trap is misidentifying a normal variant as pathology, such as a tessellated fundus or a cilioretinal artery. Another trap is failing to recognize poor image quality that could lead to misdiagnosis. Questions may ask about the appropriate action when an image is ungradable; the correct response is often to retake the image or refer for clinical examination.
Worked Example
You capture an image showing a small, round, yellow spot in the macula. It could be a drusen or a hard exudate. By considering the patient's age and history, you suspect drusen. However, you should not diagnose; instead, you document the finding and ensure the image is of high quality for the ophthalmologist to review. Rule of thumb: if unsure, describe the finding and let the physician interpret.
Key Points
- Assess image quality: exposure, focus, centration.
- Recognize normal variants vs. pathology.
- Document findings accurately without diagnosing.
- Know when to escalate to a physician.