How age-related macular degeneration is diagnosed
Diagnosis is based on identifying characteristic changes in the macula. These changes may be present even before vision is noticeably affected, making examination essential in detecting early stages.
A comprehensive eye assessment is required to confirm the presence and extent of macular changes.
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A detailed examination of the retina allows the macula to be assessed directly. Subtle structural changes, including deposits or alterations in retinal layers, can be identified during this process.
This forms a key part of diagnosing age-related macular degeneration.
Optical coherence tomography (OCT)
OCT is a specialised imaging technique used to capture detailed cross-sectional images of the retina. It allows precise evaluation of the macula and helps detect structural changes that may not be visible on examination alone.
OCT plays an important role in both diagnosis and ongoing monitoring.
Shows how Optical Coherence Tomography is used to scan the structures at the back of the eye, helping to diagnose and track changes for glaucoma, macular degeneration, and diabetic retinopathy, as well as identify retinal and macular issues, and track changes as a result of drug or laser therapy.Retinal imaging
Additional imaging may be used to document and assess changes in the retina. These images provide a visual record that can be compared over time to track progression.
Imaging supports a more comprehensive understanding of macular structure.
Amsler grid assessment
The Amsler grid is a simple tool used to detect distortion in central vision. It helps identify changes such as wavy or missing areas in the visual field.
It may be used as part of assessment or for monitoring changes over time.
Shows how an Amsler Grid can be used to assess the health of the macula.Identifying the stage and form
Diagnosis includes determining the stage and form of age-related macular degeneration. This helps guide monitoring and management decisions.
Different forms may present with distinct structural features on examination and imaging.
Establishing a baseline
Initial diagnostic findings provide a baseline for future comparison. This is important in detecting progression and evaluating how the condition changes over time.
Monitoring over time
Age-related macular degeneration requires ongoing assessment. Repeat examinations and imaging allow for early detection of progression and timely adjustments in management.
Differentiating from other conditions
It is important to distinguish age-related macular degeneration from other retinal conditions that may affect central vision. A comprehensive assessment ensures accurate diagnosis.