Ultrasound-guided preseptal hydrodissection with 5% dextrose in water for persistent botulinum toxin-associated ptosis: a technical protocol - Summary - MDSpire

Ultrasound-guided preseptal hydrodissection with 5% dextrose in water for persistent botulinum toxin-associated ptosis: a technical protocol

  • By

  • King Hei Stanley Lam

  • Yonghyun Yoon

  • Jihyo Hwang

  • Hyemi Yu

  • Seungbeom Kim

  • Daniel Chiung-Jui Su

  • May 18, 2026

  • 0 min

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Objective:

To present a systematic protocol for ultrasound-guided preseptal hydrodissection aimed at treating persistent blepharoptosis following botulinum toxin type A injections.

Key Findings:
  • Two patients with persistent BoNT-A ptosis, previously treated with conventional methods, showed progressive improvement post-procedure.
  • Marginal Reflex Distance 1 (MRD1) increased from 0 to 4 mm in one patient and normalized in the other.
  • Improvements were maintained at 3–6 months without additional treatment and no adverse events reported.
Interpretation:

The technique may serve as a minimally invasive adjunctive intervention for persistent BoNT-A-associated ptosis, though findings are preliminary and should be interpreted with caution.

Limitations:
  • Descriptive findings without controlled trials to establish efficacy and safety.
  • Small sample size with only two cases reported, limiting generalizability.
Conclusion:

The protocol standardizes a novel approach for managing persistent ptosis after BoNT-A treatment, warranting further investigation through prospective controlled trials to validate efficacy and safety.

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