Clinical Comparison of the Zone of Clear Single Binocular Vision with the Zone of Zero‐Associated Phoria

Key Points

• This research aims to compare the zone of clear single binocular vision with the zone of zero-associated phoria.
• Analyzed normative data from 156 asymptomatic patients.
• Conducted a clinical comparison between ZZAP and ZCSBV.
• Examined relationships with age, sex, and near lens addition.
• No statistically significant differences between the zones and patient age.
• No significant findings related to sex.
• Near lens addition did not affect the results for presbyopes.