This study aims to validate an observer-rated assessment titled "Functional Low-Vision Observer Rated Assessment (FLORA-20)", which comprises 20 functional vision tasks commonly performed in or around a blind individual's home environment. This study shall be carried out with individuals who have an implanted visual prosthesis device. There are no new implantations or changes to the original implant or external wearables being studied or tested. Additionally, data from the study shall not be used alter standard of care or the user's treatment options.
Study Type
OBSERVATIONAL
Enrollment
3
Second Sight Medical Products, Inc.
Sylmar, California, United States
Inter-observer reliability
Intraclass correlation coefficient (ICC) of the overall FLORA-20 scores provided by each of the assessors (in-person and remote)
Time frame: Single 1 day visit
Intra-observer reliability
ICC of the overall FLORA-20 scores provided by the same assessor, assessed and re-assessed at two different time points
Time frame: Single 1 day visit
Improvement in Average Performance, ON vs. OFF
Paired t-test to determine if there is a statistically significant improvement in average performance from ON vs. OFF
Time frame: Single 1 day visit
Clinical Meaningfulness (Effect Size)
Cohen's d calculation of overall FLORA-20 scores between device ON vs. OFF
Time frame: Single 1 day visit
Internal consistency - Cronbach's alpha
Cronbach's alpha of the individual FLORA-20 task scores
Time frame: Single 1 day visit
Internal consistency - item-total correlations
Item-total correlations for each FLORA-20 task
Time frame: Single 1 day visit
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.