Number of people newly certified severely sight impaired and sight impaired by cause and health board

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Standard shorthand is used in this table: [c] = confidential information, [t] = total.

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Data description ( of 2 selected2 selectable options)

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Cause of certification ( of 3 selected3 selectable options)

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Year ( of 13 selected13 selectable options)

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Area ( of 10 selected10 selectable options)

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Data valuesData descriptionCause of certificationYearArea
[c]NumberGlaucoma2014-15Powys Teaching Health Board
[c]NumberDiabetic eye disease2016-17Hywel Dda University Health Board
[c]NumberGlaucoma2012-13Cwm Taf University Health Board
[c]PercentageGlaucoma2019-20Hywel Dda University Health Board
[c]NumberGlaucoma2020-21Cardiff and Vale University Health Board
[c]NumberDiabetic eye disease2012-13Powys Teaching Health Board
[c]PercentageDiabetic eye disease2019-20Hywel Dda University Health Board
[c]NumberGlaucoma2012-13Cardiff and Vale University Health Board
[c]NumberGlaucoma2018-19Powys Teaching Health Board
[c]NumberGlaucoma2019-20Powys Teaching Health Board
[c]NumberDiabetic eye disease2014-15Powys Teaching Health Board
[c]NumberDiabetic eye disease2013-14Cardiff and Vale University Health Board
[c]NumberDiabetic eye disease2016-17Powys Teaching Health Board
[c]NumberGlaucoma2013-14Cwm Taf University Health Board
[c]NumberDiabetic eye disease2018-19Cwm Taf University Health Board
[c]NumberGlaucoma2016-17Hywel Dda University Health Board
[c]PercentageDiabetic eye disease2018-19Powys Teaching Health Board
[c]PercentageDiabetic eye disease2014-15Cardiff and Vale University Health Board
[c]NumberDiabetic eye disease2014-15Cardiff and Vale University Health Board
[c]PercentageDiabetic eye disease2013-14Cardiff and Vale University Health Board
[c]NumberGlaucoma2018-19Cwm Taf University Health Board
[c]PercentageDiabetic eye disease2012-13Cwm Taf University Health Board
[c]NumberDiabetic eye disease2012-13Cwm Taf University Health Board
[c]PercentageGlaucoma2014-15Cardiff and Vale University Health Board
[c]PercentageDiabetic eye disease2018-19Cwm Taf University Health Board
[c]PercentageGlaucoma2016-17Powys Teaching Health Board
[c]NumberGlaucoma2016-17Powys Teaching Health Board
[c]PercentageDiabetic eye disease2020-21Hywel Dda University Health Board
[c]PercentageDiabetic eye disease2014-15Powys Teaching Health Board
[c]PercentageGlaucoma2014-15Powys Teaching Health Board
[c]PercentageDiabetic eye disease2013-14Cwm Taf University Health Board
[c]NumberDiabetic eye disease2012-13Cardiff and Vale University Health Board
[c]PercentageDiabetic eye disease2016-17Hywel Dda University Health Board
[c]NumberGlaucoma2020-21Hywel Dda University Health Board
[c]PercentageGlaucoma2012-13Powys Teaching Health Board
[c]PercentageGlaucoma2018-19Powys Teaching Health Board
[c]NumberDiabetic eye disease2013-14Cwm Taf University Health Board
[c]NumberGlaucoma2012-13Powys Teaching Health Board
[c]NumberGlaucoma2014-15Cardiff and Vale University Health Board
[c]PercentageDiabetic eye disease2020-21Cardiff and Vale University Health Board
[c]PercentageGlaucoma2019-20Powys Teaching Health Board
[c]PercentageDiabetic eye disease2012-13Powys Teaching Health Board
[c]PercentageGlaucoma2013-14Cardiff and Vale University Health Board
[c]PercentageGlaucoma2016-17Hywel Dda University Health Board
[c]PercentageGlaucoma2020-21Cardiff and Vale University Health Board
[c]NumberDiabetic eye disease2018-19Powys Teaching Health Board
[c]PercentageDiabetic eye disease2012-13Cardiff and Vale University Health Board
[c]NumberGlaucoma2019-20Hywel Dda University Health Board
[c]PercentageGlaucoma2020-21Hywel Dda University Health Board
[c]NumberDiabetic eye disease2020-21Cardiff and Vale University Health Board
[c]NumberGlaucoma2013-14Cardiff and Vale University Health Board
[c]PercentageDiabetic eye disease2016-17Powys Teaching Health Board
[c]PercentageGlaucoma2013-14Cwm Taf University Health Board
[c]NumberDiabetic eye disease2020-21Hywel Dda University Health Board
[c]NumberDiabetic eye disease2019-20Powys Teaching Health Board
[c]NumberDiabetic eye disease2019-20Hywel Dda University Health Board
[c]PercentageGlaucoma2012-13Cwm Taf University Health Board
[c]PercentageDiabetic eye disease2019-20Powys Teaching Health Board
[c]PercentageGlaucoma2018-19Cwm Taf University Health Board
[c]PercentageGlaucoma2012-13Cardiff and Vale University Health Board
876 [t]NumberAge related macula degeneration2023-24Wales
830 [t]NumberAge related macula degeneration2018-19Wales
818 [t]NumberAge related macula degeneration2022-23Wales
816 [t]NumberAge related macula degeneration2021-22Wales
814 [t]NumberAge related macula degeneration2019-20Wales
810 [t]NumberAge related macula degeneration2024-25Wales
759 [t]NumberAge related macula degeneration2015-16Wales
750 [t]NumberAge related macula degeneration2017-18Wales
734 [t]NumberAge related macula degeneration2012-13Wales
697 [t]NumberAge related macula degeneration2014-15Wales
692 [t]NumberAge related macula degeneration2013-14Wales
691 [t]NumberAge related macula degeneration2016-17Wales
577 [t]NumberAge related macula degeneration2020-21Wales
287 [t]NumberGlaucoma2023-24Wales
258 [t]NumberGlaucoma2019-20Wales
252 [t]NumberGlaucoma2024-25Wales
243 [t]NumberGlaucoma2022-23Wales
232NumberAge related macula degeneration2012-13Betsi Cadwaladr University Health Board
230 [t]NumberGlaucoma2017-18Wales
222 [t]NumberGlaucoma2021-22Wales
219 [t]NumberGlaucoma2016-17Wales
215NumberAge related macula degeneration2024-25Betsi Cadwaladr University Health Board
210 [t]NumberGlaucoma2018-19Wales
196NumberAge related macula degeneration2023-24Betsi Cadwaladr University Health Board
192 [t]NumberGlaucoma2012-13Wales
191 [t]NumberGlaucoma2015-16Wales
190 [t]NumberGlaucoma2013-14Wales
187NumberAge related macula degeneration2021-22Betsi Cadwaladr University Health Board
184NumberAge related macula degeneration2018-19Betsi Cadwaladr University Health Board
183NumberAge related macula degeneration2022-23Betsi Cadwaladr University Health Board
182NumberAge related macula degeneration2018-19Abertawe Bro Morgannwg University Health Board
179 [t]NumberGlaucoma2014-15Wales
179NumberAge related macula degeneration2017-18Abertawe Bro Morgannwg University Health Board
179NumberAge related macula degeneration2013-14Betsi Cadwaladr University Health Board
174NumberAge related macula degeneration2015-16Betsi Cadwaladr University Health Board
170NumberAge related macula degeneration2016-17Abertawe Bro Morgannwg University Health Board
168NumberAge related macula degeneration2019-20Betsi Cadwaladr University Health Board
165 [t]NumberGlaucoma2020-21Wales
161NumberAge related macula degeneration2015-16Abertawe Bro Morgannwg University Health Board
160NumberAge related macula degeneration2021-22Aneurin Bevan University Health Board
Showing 1 to 100 of 624 rows
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Main information

Most recent update
30 September 2025
Next update expected
September 2026
Designation
Official statistics
Data provider 1
Moorfields Eye Hospital
Data source 1
No specific source from data provider
Data provider 2
NHS Wales Shared Services Partnership
Data source 2
Certificate of Vision Impairment (CVI) form
Time period covered
April 2012 to March 2025

Data notes

Overview

Summary of dataset and variables

This dataset shows the number and percentage of people newly certified as severely sight impaired or sight impaired with a certificate of vision impairment (CVI) and focuses on three main causes of sight impairment: age related macula degeneration, glaucoma and diabetic eye disease.

Wales General Ophthalmic Services (WGOS) 3 enables patients who would benefit from optical and non-optical aids as well as holistic rehabilitation support (including sight impairment registration) and advice to access a low vision service in or close to their place of residence. WGOS 3 also includes Certification of Vision Impairment (CVI).

The data is broken down by selected cause of sight impairment, health board, and financial year. Certification is a formal process that identifies individuals with significant vision loss who may be eligible for additional support. The dataset provides insight into the main causes of new certifications across different health boards and over time.

Data collection or calculation

For 2023-24 onwards, data is extracted from the low vision system maintained by NHS Wales Shared Services Partnership (NWSSP) and is based on data collected from a CVI form by NWSSP. The data covering periods up to 2022-23 was supplied by Moorfields Eye Hospital and was extracted from the Database for Epidemiological data on Visual Impairment Certificates (DEVICE). The counts are based on Welsh residents newly certified on Welsh and English forms. After NWSSP took over the data collection from 2023-24, data for Welsh residents certified in England is provided separately by Moorfields Eye Hospital. Only individuals above condition-specific age thresholds are included in the counts: those aged 12 and over for diabetic eye disease, 40 and over for glaucoma, and 65 and over for age-related macular degeneration (AMD). For each health board and Wales overall, counts of certifications for each cause are calculated alongside percentages representing the proportion of all certifications in the corresponding area.

Statistical quality

For each cause the counts include sight loss due to each cause as the main cause, or if no main cause then as a contributory cause, which could result in individuals being counted again under other conditions if there is more than one contributory cause. To protect confidentiality, counts fewer than five are suppressed, and secondary suppression is applied where necessary to prevent disclosure through deduction. Data for the latest year excludes Welsh residents certified in England. This is because this data is supplied by Moorfields Eye Hospital later in the year and therefore, the data for the latest year will be updated to include Welsh residents certified in England in the next publication. On 1 April 2019, health service responsibility for Bridgend residents moved from Abertawe Bro Morgannwg to Cwm Taf. Health board names also changed: Cwm Taf became Cwm Taf Morgannwg, and Abertawe Bro Morgannwg became Swansea Bay. See the weblinks section for official statements.

Related reports

Published by

Organisation
Welsh Government
Contact email
stats.healthinfo@gov.wales

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