Alcohol Streaks on Lenses After Wiping?

1. Causes & Risks of Alcohol Streaks

• Main Causes:

  • High alcohol concentration (>75%) leaving residue

  • Low-quality cloth fibers shedding

  • Circular wiping damaging coatings

• Potential Harm:

  • Reduced image clarity (glare/hazing)

  • Long-term coating corrosion

2. 3-Step Emergency Fix

1. Stop Using Alcohol: Switch to lens pen or distilled water

2. Unidirectional Repair:

   • Gently wipe in one direction with new cloth

   • Use “breath fogging” method for stubborn marks

3. Air-Dry: 24h natural drying (no heat)

3. Professional Prevention

✅ Tool Selection:

• ISO Class 5+ lint-free cloth (laser-cut edges)

• 70% medical ethanol (coating-safe tested)
  ✅ Technique:

• Single-use per cloth side

• Wipe center→outwards in straight lines

4. Alternative Solutions

• Low-Risk Options:

  • Fluorocarbon lens pens

  • Compressed air dusters

• Deep Cleaning:

  • Ultrasonic cleaner (removable filters only)

5. FAQs

Q: Streak vs scratch?
A: Streaks wipe off; scratches show directional glare

Q: Can phone lens coatings be repaired?
A: No – requires module replacement