They can rectify eye deficiencies? Nelson ecstatic, sadly having lost one (7,6)

From Daily Telegraph Cryptic 31270, 12A

12A — They can rectify eye deficiencies? Nelson ecstatic, sadly having lost one (7,6)CONTACT LENSES

  • Definition
    Definition found: 'They can rectify eye deficiencies?' — The opening question describes what corrects poor eyesight.
  • Indicator
    Indicator found: 'sadly'
  • Operation
    'sadly' signals a anagram operation
  • Fodder
    Fodder: 'Nelson ecstatic,'
  • Indicator
    Indicator found: 'having lost one'
  • Operation
    'having lost one' signals a deletion operation
  • Fodder
    Fodder: 'Nelson ecstatic,'
  • Assembly
    (> NELSONECSTATIC - I > NELSONECSTATC) > NELSONECSTATC = CONTACTLENSES

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