Reliability and validity of the Thai version of the Ocular surface disease index (T-OSDI)

Main Article Content

Pakornkit Phrueksaudomchai


Purpose: To evaluate the reliability and validity of the Thai version of the Ocular surface disease index (T-OSDI)
Setting/Venue: Online-based survey, Ophthalmology Department at Thammasat Hospital, Thailand
Methods: Translation of the Ocular Surface Disease Index (OSDI) from English version to Thai version was done by ophthalmologists and linguists using focus group analysis. Content validity of the translated survey was assessed by 10 examiners who are fluent in both English and Thai. The examiners are 2 corneal and refractive surgery specialists, 2 general ophthalmologists, 2 general practitioners, 2 health care personnel in the ophthalmology department and 2 language experts. Validity indexes, Item Objective Congruence (IOC) and Content Validity Index (CVI); Item level CVI & scale level CVI were evaluated. 291 participants with consent completed the T-OSDI by an online database survey but 1 was excluded due to age under the criteria. The reliability was evaluated by Cronbach’s Alpha coefficient.
Results: The indexes of item-objective congruence (IOC) ranged from 0.73 to 1.0 per each question with a mean of IOC 0.934, Item-level Content Validity Index scores (I-CVI) ranged from 0.91 to 1.00 per each question with a mean of CVI of 0.99, total scale-level Content Validity Index (S-CVI) is 0.91, Cronbach Alpha Coefficient value for reliability ranged from 0.831 and 0.855 per each question with a mean of Cronbach Alpha Coefficient value is 0.853
Conclusion: The Thai version of the Ocular surface disease index (T-OSDI) has high validity and reliability and can be applied to the Thai population for diagnosis of Dry eye disease


Download data is not yet available.

Article Details

Original Study


Yang W, Yang K, Pan Y, Wu S, Chen X, Shen L, Zeng Q, Wu J, Lv M, Zhang J, Yang Y. A literature-derived dataset on risk factors for dry eye disease. Scientific Data. 2023 Jan 11;10(1):21.

Stapleton F, Alves M, Bunya VY, Jalbert I, Lekhanont K, Malet F, Na KS, Schaumberg D, Uchino M, Vehof J, Viso E. Tfos dews ii epidemiology report. The ocular surface. 2017 Jul 1;15(3):334-65.

Lekhanont K, Rojanaporn D, Chuck RS, Vongthongsri A. Prevalence of dry eye in Bangkok, Thailand. Cornea. 2006 Dec 1;25(10):1162-7.

Wolffsohn JS, Arita R, Chalmers R, Djalilian A, Dogru M, Dumbleton K, Gupta PK, Karpecki P, Lazreg S, Pult H, Sullivan BD. TFOS DEWS II diagnostic methodology report. The ocular surface. 2017 Jul 1;15(3):539-74.

Chalmers RL, Begley CG, Caffery B. Validation of the 5-Item Dry Eye Questionnaire (DEQ-5): Discrimination across self-assessed severity and aqueous tear deficient dry eye diagnoses. Contact Lens and Anterior Eye. 2010 Apr 1;33(2):55-60.

Schiffman RM, Christianson MD, Jacobsen G, Hirsch JD, Reis BL. Reliability and validity of the Ocular Surface Disease Index. Arch Ophthalmol. 2000;118(5):615-621.

Ozcura F, Aydin S, Helvaci MR. Ocular surface disease index for the diagnosis of dry eye syndrome. Ocul Immunol Inflamm. 2007;15(5):389-393.

Grubbs JR Jr, Tolleson-Rinehart S, Huynh K, Davis RM. A review of quality of life measures in dry eye questionnaires. Cornea. 2014;33(2):215-218.

Lu F, Tao AZ, Hu YN, Tao WW, Lu P. Evaluation of reliability and validity of three common dry eye questionnaires in Chinese. J Ophthalmol 2018;2018:2401213.

Traipe L, Gauro F, Goya MC, Cartes C, López D, Salinas D, Cabezas M, Zapata C, Flores P, Matus G, Segovia C, León A, López R. Validation of the ocular surface disease index questionnaire for Chilean patients. Rev Med Chil 2020;148(2):187-195.

Midorikawa-Inomata A, Inomata T, Nojiri S, Nakamura M, Iwagami M, Fujimoto K, Okumura Y, Iwata N, Eguchi A, Hasegawa H, Kinouchi H, Murakami A, Kobayashi H. Reliability and validity of the Japanese version of the Ocular Surface Disease Index for dry eye disease. BMJ Open 2019;9(11):e033940.

Pakdel F, Gohari MR, Jazayeri AS, Amani A, Pirmarzdashti N, Aghaee H. Validation of Farsi translation of the ocular surface disease index. J Ophthalmic Vis Res 2017;12(3):301-304.

Bakkar MM, El-Sharif AK, Al Qadire M. Validation of the Arabic version of the Ocular Surface Disease Index Questionnaire. Int J Ophthalmol. 2021;14(10):1595-1601.

Santo RM, Ribeiro-Ferreira F, Alves MR, Epstein J, Novaes P. Enhancing the cross-cultural adaptation and validation process: linguistic and psychometric testing of the Brazilian-Portuguese version of a self-report measure for dry eye. J Clin Epidemiol 2015;68(4):370-378

Supiyaphun C, Jongkhajornpong P, Rattanasiri S, Lekhanont K. Prevalence and risk factors of dry eye disease among University Students in Bangkok, Thailand. PLoS One. 2021;16(10):e0258217.