Related Clues:

• Operating expense?
• Engraving tool
• Engraver's tool
• Thin surgical implement
• Surgical device
• Small surgical knife
• Eye doctor, at times
• Ophthalmologist's solution, maybe
• Eye drops, perhaps
• Eye drop that makes your pupils widen, e.g.
• Surgeon's probe
• Surgeon's knife
• Engraving instrument
• "Going under the knife" knife
• A surgeon's knife