Psychometric properties of the Dutch version Adult Strabismus-20 Questionnaire (AS-20).
Fenna BurggraafEllen Bernadette Maria ElsmanRuth Marie Antoinette van NispenMartha J Tjon-Fo-SangBea SpekHinke Marijke JellemaPublished in: Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists) (2021)
The 18-item Dutch-AS-20 has sound psychometric properties to assess the strabismus-specific QoL among Dutch adult patients with low to moderate levels of visual and psychosocial functioning. Care must be taken when interpreting the results due to lower measurement precision at the higher end of both subscales. In future longitudinal studies, properties to assess treatment effects should be evaluated.