Functional evaluation in inherited retinal disease.

Area of Science:

• Ophthalmology
• Genetics
• Clinical Research

Background:

• Functional assessments are essential for evaluating patients with inherited retinal diseases (IRDs).
• The increasing number of clinical trials for IRDs highlights the need for robust functional evaluation methods.
• Reported improvements in vision, rather than just disease stabilization, underscore the primary relevance of functional assessments.

Purpose of the Study:

• To review methods for characterizing retinal function and functional vision in IRDs.
• To discuss the application of these assessments in clinical practice and research studies.
• To explore how functional tests aid in diagnosing genotypes, monitoring disease progression, and stratifying patients for clinical trials.

Main Methods:

• Review of clinical and research-based functional assessment methods for IRDs.
• Detailed discussion of perimetry techniques (full-field static perimetry, microperimetry) as primary outcome metrics.
• Exploration of analytical methodologies to enhance the utility of functional measurements.

Main Results:

• Functional assessments range from standard clinical tests (visual acuity, electrophysiology, color discrimination) to research-oriented methods (photoaversion, perimetry, mobility testing).
• Perimetry is a key outcome measure in clinical trials for IRDs.
• Functional tests can aid in genotype-specific diagnosis and monitoring, despite limitations.

Conclusions:

• Functional assessments are critical for the diagnosis, monitoring, and clinical trial evaluation of inherited retinal diseases.
• Selecting appropriate functional tests and analytical methods is key to their effective use in trials.
• These assessments facilitate patient stratification and serve as crucial outcome measures for novel IRD therapies.