Good Hope, Heartlands, and Solihull Eye Clinics

Occult, no PED wet ARMD, = Mixed (predominantly or minimally classic CNV with occult CNV)


David Kinshuck

'Occult', no PED, = Mixed (predominantly or minimally classic CNV with occult CNV) wet armd

type 1 CNV ('occult')

type 1 cnv

In this type of ARMD, there are new blood vessels, but they are not clearly seen with the angiogram. 'Occult' CNV is the term given to a specific 'blotchy' appearance of the angiogram. This is probably an early phase of classic, see . Occult and classic patterns can occur together. Anti-VEGF drugs generally help. The symptoms of this type of CNV are the same as 'classic CNV', except the condition takes longer to develop. Without treatment, this usually turns into classic CNV over the next months or years, to cause poor central vision.

  • Large CNV membranes can develop haemorrhages with anti-VEGF treatment (BJO 2008).
  • photo   another   another..occult/mixed    another   flash   another    large diagram
  • The term occult is not really used now: the condition is a subtype of wet armd sometimes termed type 1 cnv.
  • Sometimes there is a hyper-reflective material which is related to prognosis, and to pachychoroidopathy (= thickened choroid).
  • Sometimes there is fluid, but if the fluid is stable injections don't seem to help.

occult cnv, no PED

Photograph and fluorescein agniogram, late leakage = occult type wet ARMD. Treaterd with anti-VEGF drugs