Lisa Donaldson, Head of Eyecare and Clinical Lead Optometrist at SeeAbility, highlights some of the limitations in existing clinically validated vision tests. She shares insights into the challenges of engaging individuals with complex needs during assessments and envisions how future developments could lead to more accurate and detailed vision assessment results.

Engaging Sight Test Considerations

Lisa emphasises that creating stimulating and engaging sight tests requires a tailored approach for different populations of children.

Challenges with Current Tests

1. Limited Engagement for Nonverbal Children

   • For example, children with autism who are nonverbal but demonstrate strong functional vision (e.g., navigating a room with ease) often do not engage with traditional vision tests.
   • Current clinically validated tests fail to capture their abilities, as they are not engaging enough to hold attention.

2. Low-Threshold Tests

   • Many tests rely on low-resolution or low-contrast stimuli that fail to stimulate interest.
   • While a bright, flashing ball may attract attention, it only provides a crude measurement of vision.

3. Stepwise Approach is Missing

   • Lisa points out the need for tests that "staircase" stimuli, incrementally testing visual thresholds to gauge detail resolution and contrast sensitivity.

The Future of Vision Test Engagement

Lisa envisions a future where vision tests are more dynamic and adaptable, allowing for:

1. Higher Control Over Stimuli

   • Tests that use stimulating and visually engaging targets to capture attention while enabling accurate assessments.

2. Customisation for Different Needs

   • A modular approach that adjusts stimuli for varying levels of visual resolution and contrast sensitivity.

3. Comprehensive Testing Tools

   • Advanced tools that combine engagement and accuracy, providing a richer understanding of a child’s vision capabilities.

Key Takeaways

1. Current Limitations

   • Existing clinically validated vision tests often fail to engage children, especially those with complex needs or nonverbal communication.

2. Need for Better Engagement

   • Engaging and stimulating tests are essential for capturing more detailed and accurate vision assessment results.

3. Future Vision

   • Developing comprehensive, adaptive tests will empower optometrists to better understand visual thresholds while maintaining engagement.

Final Thoughts

The next generation of vision tests must balance engagement and precision to cater to diverse needs. By leveraging innovative technologies and designing dynamic tools, optometrists will be able to provide more accurate and meaningful assessments for all children, including those with complex needs.

For more information on improving vision assessment and care, visit SeeAbility.