Related Clues:

• With 35-Across, it sends electrical impulses to the brain
• Fiber attachment?
• Measuring device attached to inverted bottles of spirits
• ___ disk (spot on the retina)
• Type of lens or nerve
• Surgical procedure overcoming twitching of the eye
• Alcohol measure for your eyes only?
• Type of modern fiber
• Instrument lens
• In photographic jargon, a lens
• Awkward topic for one on the bottle in the pub
• The 'o' of Verizon's Fios
• It measures spirits of subject as temperature drops
• ___ disc (retina part)
• Looker's nerve twitching after op