Reliability and Agreement of an Integrated Platform for Intelligent Visual Function Measurement

Area of Science:

• Ophthalmology and Optometry
• Vision Science
• Clinical Instrumentation

Background:

• Phoropters are standard clinical tools for refraction and visual function testing.
• Assessing the reliability of new visual function assessment technologies is crucial for clinical adoption.

Purpose of the Study:

• To evaluate the reliability and agreement of the new Inspection Platform of Visual Function (IPVF) compared to a conventional phoropter (TOPCON VT-10).
• To determine the repeatability and concordance of key visual function measurements between the IPVF and phoropter.

Main Methods:

• A prospective study involving 80 eyes of 80 healthy subjects.
• Measurements included horizontal phoria (Phoria_D, Phoria_N), negative/positive relative accommodation (NRA/PRA), and accommodative amplitude (AMP).
• Intraclass correlation coefficients (ICCs) assessed repeatability; Bland-Altman plots evaluated agreement between the IPVF and phoropter.

Main Results:

• Both IPVF and phoropter showed high repeatability for phoria and accommodative amplitude (ICCs 0.87-0.98).
• IPVF demonstrated excellent repeatability for NRA/PRA (ICC 0.96), while phoropter showed acceptable repeatability (ICC 0.732).
• Narrow 95% limits of agreement indicated satisfactory concordance between the two instruments for all measured parameters.

Conclusions:

• The IPVF instrument exhibits high repeatability and satisfactory agreement with a conventional phoropter for visual function assessment.
• The IPVF showed slightly superior repeatability for PRA compared to the phoropter.
• The findings support the IPVF as a reliable tool for clinical visual function testing.