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Good Hope Hospital Eye Clinic
 

Occult type 2 (no PED) wet ARMD
David Kinshuck & Monique Hope-Ross

other types of wet ARMD and relevant pages

Each type alone
Low vision & Macula Disease

‘Occult’ CNV type 2 (no 'PED')

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. Occult ARMD is probably an early phase of classic, see . Occult and classic patterns can occur together.

Anti-VEGF drugs are used and results are generally good.

The symptoms of this type of CNV are the same as 'classic CNV' .

Without teatment, this type 2 occult CNV usually turns into classic CNV over the next months or years, to cause poor central vision.

Large occult membranes can develop haemorrhages with anti-VEGF treatment (BJO 2008).
occult cnv (occult type of wet ARMD)

This diagram of occult CNV looks similar to that of classic wet ARMD.
But the blood vessels are different (they are ill-defined on the the fluourescein angiogram). The main fluid collection is under the retina (neuro-sensory detachment). There is usually a small PED as well.
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The address of this site ('org' changing to 'nhs') is changing from http://www.goodhope.org.uk/departments/eyedept/ to http://www.goodhope.nhs.uk/departments/eyedept/
Eye website feedback -- Heartlands -- page edited October 2011 -- Public transport to Good Hope --