Reliability and validity of the persian version of quality of life impact of refractive correction questionnaire

Ali Makateb; Amin Nabavi; Mahsa Naghash Tabrizi; Hesam Hashemian; Keyvan Shirzadi

doi:10.4103/joco.joco_56_21

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ORIGINAL ARTICLE

Year : 2021 \| Volume : 33 \| Issue : 4 \| Page : 431-436

Reliability and validity of the persian version of quality of life impact of refractive correction questionnaire Ali Makateb¹, Amin Nabavi², Mahsa Naghash Tabrizi³, Hesam Hashemian⁴, Keyvan Shirzadi⁵ ¹ Department of Ophthalomolgy, AJA University of Medical Sciences; Eye Research Center, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran ² Department of Ophthalomolgy, AJA University of Medical Sciences; Eye Research Center, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran; Eye Research Center, Amir Almomenin Hospital, Guilan University of Medical Sciences, Rasht, Iran ³ Department of Psychiatry, Tarbiat Modarres University, Tehran, Iran ⁴ Eye Research Center, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran ⁵ Department of Ophthalomolgy, AJA University of Medical Sciences, Tehran, Iran Correspondence Address: Amin Nabavi Department of Ophthalmology, AJA University of Medical Sciences, Tehran Iran Source of Support: None, Conflict of Interest: None DOI: 10.4103/joco.joco_56_21

Purpose: To evaluate the psychometric properties of the Persian version of quality of life impact of refractive correction (QIRC) questionnaire and its utility in assessment of refractive error-related quality of life (QoL) following photorefractive keratectomy (PRK). Methods: Patients with low-to-moderate myopia (−0.75 to − 6.0) were enrolled in this study. Standard alcohol-assisted PRK was performed in all patients. The QIRC questionnaire was translated into a Persian version using the standard method. Patients completed QIRC questionnaire preoperatively and 3-month postoperatively. A group of patients completed the questionnaire twice preoperatively. Psychometric properties were evaluated by internal consistency (Cronbach's α), item-total correlation, and known group construct validity. Intraclass correlation coefficient (ICC) were used to examine the repeatability. Results: One hundred forty-seven patients (60 males and 87 females) with a mean age of 26.3 ± 5.5 (range, 18–39) years were enrolled. Cronbach's α for total score was 0.923. Item-total correlation was above 0.3 for all items. ICC was 0.978 for total score. Preoperatively, predominantly contact lens wearers showed significantly better total QIRC score than predominantly spectacle wearers (P = 0.017), which showed good known group validity. Total QIRC score significantly increased from 41.31 ± 6.69 preoperatively to 50.47 ± 7.26 postoperatively (P < 0.0001). Improvement in total QIRC score was observed both in contact lens wearers and spectacle wearers. Conclusion: The Persian version of QIRC questionnaire is a valid and reliable tool. Refractive error-related QoL assess by QIRC was significantly improved after PRK in an Iranian population.



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