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Classic AMD

Classic AMD or classic choroidal neovascularization (CNV) is one of the two types of wet macular degeneration. The two subtypes of wet macular degeneration are occult and classic.

Classic Wet Macular Degeneration is:

√ Identified by a well-defined area of new blood vessel growth in the macula .

√ Detected on clinical examination or through retinal photography and fluorescein angiography (a specialized series of photographs of the retina)

√ Involves a more severe and rapid vision loss than other types of choroidal neovascularization, such as occult CNV.

Just when you thought you were understanding all these macular degeneration diagnoses, we decide to get a bit more complicated.

The lesions that are viewed during your eye exam are not that black and white - i.e either you have classic AMD or occult AMD.

Your ophthalmologist may see some of each in your eye - a combination of classic and occult. This makes treatment decisions more complicated.

Listed below are the four different types of choroidal neovascularization.

1. Classic with No Occult

No occult component to this type of CNV. The lesion is only composed of classic CNV.

2. Predominantly Classic CNV

A predominantly classic CNV is defined by a mixture of the classic and occult, with the classic component making up more than 50 % of the entire lesion.

3. Minimally Classic CNV

A minimally classic CNV lesion is defined by:

1) the classic component is less than 50% of the total lesion area and

2)the occult component is more than 50% of the lesion.

4. Occult Only

No classic CNV component, only occult. This subtype of wet macular degeneration has less leakage which means that the vision loss is not as rapid as the classic subtype. The minimally classic and occult types account for around 75% of those with wet AMD.

Go from Classic AMD to Wet Macular Degeneration

Go from Classic AMD to WebRN Macular Degeneration Home

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