Striped Circle Visual Acuity Chart; A Novel Visual Acuity Chart Based on the Landolt-C Chart.

Area of Science:

• Ophthalmology
• Optometry
• Vision Science

Background:

• Visual acuity (VA) measurement is crucial for eye examinations, disease diagnosis, and treatment evaluation.
• Changes in VA are indicative of various eye diseases, impacting visual function prediction.
• Standard VA charts like the Landolt-C (LC) chart are widely used in clinical practice.

Purpose of the Study:

• To introduce a novel Stripped Circle (SC) VA chart designed for simultaneous VA and astigmatism assessment.
• To describe the development of the SC chart based on existing VA chart standards.
• To highlight the need for further clinical validation of the SC chart's performance.

Main Methods:

• Development of a new Stripped Circle (SC) VA chart.
• Incorporation of standards from existing VA measurement scale and Landolt-C (LC) charts.
• Proposed evaluation of sensitivity, specificity, and repeatability.

Main Results:

• A novel SC VA chart has been developed.
• The SC chart integrates principles from standard VA and LC charts.
• The chart has the potential for simultaneous VA and astigmatism evaluation.

Conclusions:

• The newly designed SC VA chart offers a potential method for combined visual acuity and astigmatism assessment.
• Further clinical studies are essential to establish the SC chart's diagnostic accuracy and reliability.
• Comparative analysis against standard VA charts is required for clinical adoption.