Mae Canolfannau Diagnostig a Thriniaeth Offthalmig yn elfen allweddol o gynlluniau byrddau iechyd i ddarparu gwasanaethau cymunedol i asesu a rheoli cleifion sydd â chyflyrau llygaid â risg isel o ddirywio. Mae’r canolfannau hyn hefyd yn sicrhau bod gan wasanaethau cataract glinigau un stop, clinigau gweithio cymunedol a rhithwir, sy’n newid gweddnewidiol hanfodol i fyrddau iechyd ei weithredu a sicrhau bod y claf a’i anghenion yn ganolog i’r broses.
Ophthalmic Diagnostic and Treatment Centres are a key element in health board plans to deliver community-based services to assess and manage patients whose eye conditions are at low risk of deterioration.  The Ophthalmic Diagnostic and Treatment Centres also ensure cataract services have one-stop clinics, community working and virtual clinics, which is essential transformational change for health boards to implement and ensure the patient and their needs are at the centre of the process.