Usefulness Assessment of Automated Strabismus Angle Measurements Using Innovative Strabiscan Device

Area of Science:

• Ophthalmology
• Medical Devices
• Diagnostic Technology

Background:

• Manual strabismus angle assessment is subjective and varies with examiner experience.
• Existing methods may lack sensitivity for detecting small strabismus angles.
• There is a need for a more objective and repeatable strabismus measurement tool.

Purpose of the Study:

• To introduce the Strabiscan, an innovative device for automated strabismus angle measurement.
• To evaluate the sensitivity and repeatability of the Strabiscan device.
• To compare Strabiscan measurements with the traditional manual prismatic cover-uncover test (PCT).

Main Methods:

• A cohort of 30 patients with manifest strabismic disease and 30 healthy subjects were recruited.
• Standard ophthalmologic examinations were performed, including visual acuity and refractive error assessment.
• Strabismus angles were measured using both the manual prismatic cover-uncover test and the Strabiscan device.

Main Results:

• Strabiscan diagnosed small-angle latent strabismus (≤3 prism diopters) in 83% of patients, versus 13% with the manual PCT.
• The Strabiscan identified a higher prevalence of low-angle latent strabismus.
• No statistically significant differences were found in the measured strabismus angles between the methods.

Conclusions:

• The Strabiscan device provides a quick, accurate, and automated assessment of strabismus angles.
• Strabiscan demonstrates higher sensitivity in detecting low-angle latent strabismus compared to the manual PCT.
• The Strabiscan eliminates the need for additional assistants during testing.