An Italian translation and validation of the Near Activity Visual Questionnaire (NAVQ)

Eur J Ophthalmol 2017; 27(6): 640 - 645

Article Type: ORIGINAL RESEARCH ARTICLE

DOI:10.5301/ejo.5000957

Authors

Zeri, Fabrizio Beltramo, Isabella Boccardo, Laura Palumbo, Paolo Petitti, Vincenzo Wolffsohn, James S. Naroo, Shehzad A.

Abstract

Purpose

To validate the Near Activity Vision Questionnaire (NAVQ) in Italian to allow the assessment of presbyopia corrections in Italian-speaking patients.

Methods

An Italian version of the NAVQ was arranged through several steps: an initial forward translation (from English to Italian), a backward translation (from Italian to English), and finally a consensual version to check against the original NAVQ. This prospective study enrolled native Italian-speaking presbyopic patients with corrected distance visual acuity of 0.20 logMAR or better in each eye and free of ocular anomalies. Six different groups of patients were asked to complete the questionnaire: emerging presbyopic patients, reading spectacle users, multifocal spectacle users, multifocal contact lens (CL) wearers, monovision CL wearers, and monofocal intraocular lens patients. Subjects were asked to answer the questionnaire again 2 weeks after the first completion.

Results

A total of 207 subjects completed the questionnaire. Data analysis showed good internal consistency (Cronbach α = 0.93) and factorial validity with only one factor explaining 62.0% of the variance. Test-retest reliability was extremely good (ICC = 0.92) as well as discriminatory power of the questionnaire’s ability to discriminate between subjects with different forms of presbyopic correction.

Conclusions

The Italian version of the NAVQ matches the properties of the original English version. It is a valid instrument to evaluate near activity visual quality of presbyopic Italian speakers.

Article History

Disclosures

Financial support: Dr. Fabrizio Zeri is funded with the support of the European Union under a Marie Curie Intra-European Fellowship for Career Development.
Conflict of interest: None of the authors has conflict of interest with this submission.

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