Is the convergence insufficiency symptom survey applicable to elderly individuals?

ABSTRACT:

Background

The psychometric properties of the Convergence Insufficiency Symptom Survey (CISS) have been previously determined across the younger adult population. This study investigated the psychometric properties of the CISS in presbyopic adults via classical and Rasch analysis.

Methods

A total of 100 presbyopic individuals (40-60 years) were selected with far and near acuity of 20/20 with their habitual spectacles; 50 had convergence insufficiency and 50 had normal binocular vision. Refraction, cover test, near point of convergence, and positive fusional ranges were examined. The Persian translated CISS was administered twice, once in the first session and 7 to 14 days later. Classical and Rasch analyses were conducted.

Results

The mean ages and gender ratios in th

SUBMITTER: Abdi S 

PROVIDER: S-EPMC11742225 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature