Doctor stops one condition of the eyelids (6)

I believe the answer is:

ptosis

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

'condition of the eyelids' is the definition.
'ptosis' can be an answer for 'condition' (ptosis is a kind of condition). I'm not certain of the 'of the eyelids' bit.

'doctor stops one' is the wordplay.
'doctor' indicates anagramming the letters.
'one' becomes 'I' (Roman numeral).
'stops'+'i'='stopsi'
'stopsi' with letters rearranged gives 'PTOSIS'.

Can you help me to learn more?

I've seen this clue in The Hindu.

Want a hint initially instead of a full solution? Install my app