Doctor may seek something to block the light (7)

I believe the answer is:

eyemask

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'something to block the light' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.

'doctor may seek' is the wordplay.
'doctor' is an anagram indicator.
'may'+'seek'='mayseek'
'mayseek' with letters rearranged gives 'EYEMASK'.

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I've seen this clue in The Irish Times.

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