Revised Self-Report Assessment of Functional Visual Performance (R-SRAFVP)-Part I: Content Validation

Area of Science:

• Occupational therapy
• Low vision rehabilitation
• Functional visual performance assessment

Background:

• Assessing functional visual performance is crucial for individuals with low vision.
• Existing tools may require updates to accurately reflect daily task challenges.
• The Self-Report Assessment of Functional Visual Performance (SRAFVP) is a foundational tool in this area.

Purpose of the Study:

• To develop and validate the content of a revised Self-Report Assessment of Functional Visual Performance (R-SRAFVP).
• To ensure the R-SRAFVP accurately measures the ability of adults with low vision to perform vision-dependent daily tasks.
• To confirm the understandability of the R-SRAFVP for its target population.

Main Methods:

• A three-stage content validation process was employed.
• Occupational therapy experts in low vision rehabilitation revised and evaluated assessment items and the rating scale.
• Adults with low vision provided feedback on item clarity through cognitive interviewing.

Main Results:

• The revised assessment (R-SRAFVP) evolved from 38 to 50 items, incorporating expert feedback.
• A 4-point rating scale was established, achieving a content validity index of .9.
• Cognitive interviewing confirmed the clarity and understandability of the R-SRAFVP content.

Conclusions:

• The R-SRAFVP demonstrates relevant content for evaluating functional vision in adults with low vision.
• The revised assessment is understandable and suitable for use with adults experiencing low vision.
• The R-SRAFVP is a validated instrument for assessing vision-dependent daily activities.