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Conference Paper: Prevalence of Diabetic Retinopathy and Sight Threatening Diabetic Retinopathy in Hong Kong. Are We More or Less at Risk?

TitlePrevalence of Diabetic Retinopathy and Sight Threatening Diabetic Retinopathy in Hong Kong. Are We More or Less at Risk?
Authors
Issue Date2014
PublisherHospital Authority (HA).
Citation
The 20th Hospital Authority Convention (HAC 2014), Hong Kong, China, 7-8 May, 2014. In Programme Book, 2014, p. 100, abstract no. SPP1.2 How to Cite?
AbstractINTRODUCTION: Diabetic retinopathy (DR) is a leading cause of visual impairment in the working age population. By the time diabetic patients seek help for clinicians, the condition may be advanced and irreversible. Timely detection of sight threatening DR (STDR) symptoms and timely laser treatment can prevent blindness due to diabetic eye disease. OBJECTIVES: The objectives of this study were: (1) To detect prevalence of DR and STDR in Hong Kong as a whole and in different clusters in Hong Kong; and (2) to compare with the global prevalence rate of DR. METHODOLOGY: Subjects with history of diabetes mellitus were screened at primary care outpatient clinics under the “Risk Assessment and Management Programme”. They underwent examination of visual acuity, anterior segment examination, and dilatation of pupils followed by mydriatic digital retinal fundus photography by trained optometrists. These photographs were systematically graded for DR according to the English national screening programme. The primary and secondary gradings were done by the optometrists and in event of any discrepancy, the arbitration grading was done by an ophthalmologist. The subjects were graded as having no DR, background DR, or STDR which included maculopathy, pre-proliferative DR and proliferative DR. RESULTS: In all, 145,888 subjects underwent screening for DR from November 2009 to August 2013. Of these, after excluding the subjects with ungradable photographs (n=8151; 5.6%), the prevalence of DR was 40.1% (95% CI: 39.9-40.4) for any DR and 10.2% (10.0-10.3) for STDR. The prevalence of maculopathy was 8.9% (95% CI: 8.8-9.0).The prevalence of proliferative DR was <1.0%. The prevalence of any DR in different clusters varied between 33.4 % and 49.8% while STDR prevalence varied between 7.3% and 11.9%. The prevalence of maculopathy varied between 8.0% and 10.1% amongst different clusters. The overall prevalence of DR in Hong Kong was 40% and that of STDR was 10.2%. The prevalence of STDR was similar to the global prevalence (10.2%) while the prevalence of any DR was higher than global prevalence ( 34.6%). The prevalence of maculopathy was slightly higher than global prevalence (7.5%). On the other hand, the prevalence of proliferative DR was <1.0% in our population as compared to the global prevalence of 7.0%. There was little variation in DR or STDR between clusters.
DescriptionService Priorities and Programmes Free Papers: Service Reviews and Audits
Persistent Identifierhttp://hdl.handle.net/10722/202072

 

DC FieldValueLanguage
dc.contributor.authorGangwani, RAen_US
dc.contributor.authorMcGhee, Sen_US
dc.contributor.authorLam, CLKen_US
dc.contributor.authorLai, JSMen_US
dc.contributor.authorWong, DSHen_US
dc.date.accessioned2014-08-21T08:01:25Z-
dc.date.available2014-08-21T08:01:25Z-
dc.date.issued2014en_US
dc.identifier.citationThe 20th Hospital Authority Convention (HAC 2014), Hong Kong, China, 7-8 May, 2014. In Programme Book, 2014, p. 100, abstract no. SPP1.2en_US
dc.identifier.urihttp://hdl.handle.net/10722/202072-
dc.descriptionService Priorities and Programmes Free Papers: Service Reviews and Audits-
dc.description.abstractINTRODUCTION: Diabetic retinopathy (DR) is a leading cause of visual impairment in the working age population. By the time diabetic patients seek help for clinicians, the condition may be advanced and irreversible. Timely detection of sight threatening DR (STDR) symptoms and timely laser treatment can prevent blindness due to diabetic eye disease. OBJECTIVES: The objectives of this study were: (1) To detect prevalence of DR and STDR in Hong Kong as a whole and in different clusters in Hong Kong; and (2) to compare with the global prevalence rate of DR. METHODOLOGY: Subjects with history of diabetes mellitus were screened at primary care outpatient clinics under the “Risk Assessment and Management Programme”. They underwent examination of visual acuity, anterior segment examination, and dilatation of pupils followed by mydriatic digital retinal fundus photography by trained optometrists. These photographs were systematically graded for DR according to the English national screening programme. The primary and secondary gradings were done by the optometrists and in event of any discrepancy, the arbitration grading was done by an ophthalmologist. The subjects were graded as having no DR, background DR, or STDR which included maculopathy, pre-proliferative DR and proliferative DR. RESULTS: In all, 145,888 subjects underwent screening for DR from November 2009 to August 2013. Of these, after excluding the subjects with ungradable photographs (n=8151; 5.6%), the prevalence of DR was 40.1% (95% CI: 39.9-40.4) for any DR and 10.2% (10.0-10.3) for STDR. The prevalence of maculopathy was 8.9% (95% CI: 8.8-9.0).The prevalence of proliferative DR was <1.0%. The prevalence of any DR in different clusters varied between 33.4 % and 49.8% while STDR prevalence varied between 7.3% and 11.9%. The prevalence of maculopathy varied between 8.0% and 10.1% amongst different clusters. The overall prevalence of DR in Hong Kong was 40% and that of STDR was 10.2%. The prevalence of STDR was similar to the global prevalence (10.2%) while the prevalence of any DR was higher than global prevalence ( 34.6%). The prevalence of maculopathy was slightly higher than global prevalence (7.5%). On the other hand, the prevalence of proliferative DR was <1.0% in our population as compared to the global prevalence of 7.0%. There was little variation in DR or STDR between clusters.-
dc.languageengen_US
dc.publisherHospital Authority (HA).-
dc.relation.ispartofHospital Authority Convention, HAC 2014en_US
dc.titlePrevalence of Diabetic Retinopathy and Sight Threatening Diabetic Retinopathy in Hong Kong. Are We More or Less at Risk?en_US
dc.typeConference_Paperen_US
dc.identifier.emailGangwani, RA: gangwani@hku.hken_US
dc.identifier.emailMcGhee, S: smmcghee@hkucc.hku.hken_US
dc.identifier.emailLam, CLK: clklam@hku.hken_US
dc.identifier.emailLai, JSM: laism@hku.hken_US
dc.identifier.emailWong, DSH: shdwong@hku.hken_US
dc.identifier.authorityGangwani, RA=rp01883en_US
dc.identifier.authorityMcGhee, S=rp00393en_US
dc.identifier.authorityLam, CLK=rp00350en_US
dc.identifier.authorityLai, JSM=rp00295en_US
dc.identifier.authorityWong, DSH=rp00516en_US
dc.identifier.hkuros234672en_US
dc.identifier.hkuros235423-
dc.identifier.spage100, abstract no. SPP1.2-
dc.identifier.epage100, abstract no. SPP1.2-
dc.publisher.placeHong Kong-

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