Cost-Effectiveness Analysis of Non-Mydriatic Ultrawide- Field Fundus Photography versus Pharmacological Pupil Dilatation in Diabetic Retinopathy Screening Program
Rintra Wongvisavavit MD¹, Danupon Nantajit PhD², Tuangrat Phodha PhD³
Affiliation : ¹ Faculty of Medicine and Public Health, HRH Princess Chulabhorn College of Medical Science, Chulabhorn Royal Academy, Bangkok, Thailand ² Faculty of Medicine and Public Health; Department of Research Innovation and International Relations, HRH Princess Chulabhorn College of Medical Science, Chulabhorn Royal Academy, Bangkok, Thailand ³ Faculty of Pharmacy; Drug Information and Consumer Protection Center; Excellence Center in Pharmacy Practice and Management Research, Thammasat University, Pathum Thani, Thailand
Background : Diabetic retinopathy (DR) causes blindness of the population in many countries worldwide. Early detection and treatment of this
disease via a DR screening program is the best way to secure the vision. An annual screening program using pharmacological pupil dilatation
becomes the standard method. Recently, non-mydriatic ultrawide-field fundus photography (UWF) has been proposed as a choice for DR screening.
However, there was no cost-effectiveness study between the standard DR screening and this UWF approach.
Objective : To compare the cost-effectiveness between UWF and pharmacological pupil dilatation in terms of hospital and societal perspectives. Materials and Methods : Patients with type 2 diabetes mellitus that visited the ophthalmology clinic at Chulabhorn Hospital for DR screening were randomized using simple randomization method. The patients were interviewed by a trained interviewer for general and economic information. The clinical characteristics of DR and staging were recorded. Direct medical costs, direct non-medical costs, and informal care costs due to DR screening were recorded. Cost analyses were calculated for the hospital and societal perspectives.
Results : The present study presented the cost-effectiveness analyses of UWF versus pharmacological pupil dilatation. Cost-effectiveness analysis from the hospital perspective showed the incremental cost-effectiveness ratio (ICER) of UWF to be –13.87. UWF was a cost-effective mean in DR screening in the societal perspective when compared with pharmacologically pupil dilatation with the ICER of 76.46, under the threshold of willingness to pay.
Conclusion : The UWF was a cost-effective mean in DR screening. It can reduce screening duration and bypass post-screening blurred vision. The results suggested that UWF could be a viable option for DR screening.
Received 10 November 2020 | Revised 26 February 2021 | Accepted 9 March 2021
doi.org/10.35755/jmedassocthai.2021.05.12238
Keywords : Diabetic retinopathy, Diabetic retinopathy screening, Non-mydriatic ultrawide-field fundus photography, Cost-effectiveness analysis
