Crossword Genius

Forget, when you no longer view? (4,5,2)

Ross

I believe the answer is:

lose sight of

I'm a little stuck... Click here to teach me more about this clue!

'forget' is the definition.
(thesaurus)

'when you no longer view?' is the wordplay.
I cannot quite see how this works, but
'when' could be 'e' (I've seen this in other clues) and 'e' is found in the answer.
'no' could be 'o' (resembles 0 - 'no' can mean 'zero') and 'o' is present in the answer.
'view?' could be 'sight' ('sight' can be a synonym of 'view') and 'sight' is found in the answer.
This explanation may well be incorrect...

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I've seen this clue in the Evening Standard.
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