Clinical trial Recruiting at 8 sites Interventional Ages 50 and up

Comparing two surgical methods for treating advanced bullous pseudophakic keratopathy

Official title: Comparative Effectiveness of PKP and DSAEK in Terms of 2-year Postoperative Visual Acuity in Advanced Bullous Pseudophakic Keratopathy: a Randomised Clinical Trial

Run by Centre Hospitalier Régional Metz-Thionville · NCT06818747 · Data updated 2026-11-12

This study is testing whether two different eye surgeries can help people over 50 with advanced bullous pseudophakic keratopathy see better and feel more satisfied after the procedure.

Quick facts

Study typeInterventional
Ages50 Years and up
SexAll
Enrollment334 (estimated)
SponsorCentre Hospitalier Régional Metz-Thionville
Academic / other
Locations11 sites (Besançon and 10 other locations)
StatusRecruiting
StartedMay 21, 2025
Main results expectedMay 21, 2027
Study endsAugust 21, 2029
Registry record updatedJune 24, 2026
Trial IDNCT06818747 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are patients aged 50 and older with advanced PBK and specific visual acuity criteria.

Probably not a fit

Patients with a history of corneal transplant or significant ocular comorbidities may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This clinical trial is an open-label, multicenter, randomized controlled trial designed to compare the effectiveness of Penetrating Keratoplasty (PKP) versus Descemet Stripping Automated Endothelial Keratoplasty (DSAEK) in patients with advanced Bullous Pseudophakic Keratopathy (PBK). Eligible patients aged 50 and older will be randomized into one of the two surgical arms, and their visual acuity, quality of life, patient satisfaction, pain levels, and corneal thickness will be assessed at multiple follow-up visits over a two-year period. The study aims to determine which surgical method provides better postoperative visual outcomes and overall patient satisfaction.

Why it matters

Potential benefit: If successful, this study could lead to improved visual outcomes and quality of life for patients suffering from advanced bullous pseudophakic keratopathy.

How similar studies have gone: Previous studies have shown that DSAEK often results in faster visual recovery and fewer complications compared to PKP, indicating a potential for success in this comparative approach.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* The patient:

  1. Is ≥ 50 years old.
  2. Has advanced PBK, with a best corrected visual acuity that lies between being able to see a hand move (i.e. 2 logMAR, included) and 2/10 excluded (i.e. 0.7 logMAR, excluded) and a central corneal thickness that exceeds 600 μm.
  3. Is indicated for a corneal transplant.
  4. Is pseudophakic.
  5. Has provided free and informed written consent.
  6. Is affiliated to a social security scheme.
  7. Can be followed-up by the same investigating team during the study period.

Exclusion Criteria:

* The patient:

  1. Has a history of corneal transplant on either eye (i.e. the study surgery will be the first corneal transplant for the patient).
  2. Has an anterior chamber lens implant or is aphakic.
  3. Has an ocular comorbidity that will impact visual acuity recovery: exudative or advanced atrophic AMD, advanced diabetic retinopathy (macular edema), advanced glaucoma (damage to the central visual field), important sequelae of central venous thrombosis of the retina or retinal detachment, previous amblyopia.
  4. Has a contraindication to general anesthesia.
  5. Is deprived of freedom, or under a legal protective measure.
  6. Is included in another clinical study.
  7. Has a severe general condition that might lead to premature discontinuation of the trial before the end of treatment period.

Where it's running

  • CHU Besançon - Hôpital Jean Minjoz
    Besançon, France
    Recruiting
  • CHU Bordeaux - Hopital Pellegrin
    Bordeaux, France
    Recruiting
  • CHU Brest - Hopital Morvan
    Brest, France
    Recruiting
  • CHR Metz-Thionville Hopital de Mercy
    Metz, France
    Recruiting
  • CHU Saint-Etienne - Hôpital Nord
    Saint-Etienne, France
    Recruiting
  • CHRU Strasbourg - Nouvel Hôpital Civil
    Strasbourg, France
    Recruiting
Show 5 more locations
  • CHU Toulouse - Hopital Purpan
    Toulouse, France
    Recruiting
  • CHRU Tours
    Tours, France
    Recruiting
  • CHU Nantes - Hôpital Hotel-Dieu
    Nantes, France
    Not yet recruiting
  • APHP - Hopital Cochin
    Paris, France
    Not yet recruiting
  • Chno Xv Xx
    Paris, France
    Not yet recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.