Crossword Genius

European IT errors holding up our pupils’ targets? (7)

Ross

I believe the answer is:

retinae

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'our pupils' targets?' is the definition.
I can't tell whether this defines the answer.

'european it errors holding up' is the wordplay.
'holding' says the answer is hidden in the clue.
'up' says the letters should be written in reverse (in down clue: letters go upwards).
'eaniter' is hidden in the letters of 'european it errors'.
'eaniter' back-to-front is 'RETINAE'.

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I've seen this clue in The Independent.
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