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RecruitingNCT06402643Updated May 7, 2024

Comparison of Recurrence Between Mini-SLET and Limbal-Conjunctival Autograft Techniques in Primary Pterygium

An interventional study of Pterygium Excision in Pterygium of Right Eye, Pterygium of Left Eye and Pterygium of Both Eyes, sponsored by Instituto de Oftalmología Fundación Conde de Valenciana. Recruiting at 1 site in Mexico. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2024-05-07.

Sponsored by Instituto de Oftalmología Fundación Conde de Valenciana · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Aug 2025, 1 year 2 months ago, but the record still lists the study as recruiting.
Phase
Not applicable
Study type
Interventional
Enrollment
68
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The surgical treatment options for pterygium, an abnormal growth on the eye's frontal surface can be treated with several surgical techniques. The rates of pterygium coming back varies depending on the surgical technique employed and other factors related to the patient and surgery. The objective of this study is to assess the efficacy and safety of incorporating a single amniotic membrane with stem cells in the treatment of primary pterygium, aiming to enhance surgical outcomes and minimize recurrence rates.

Read the detailed description

The surgical treatment options for pterygium, an abnormal growth on the eye's surface, encompass various approaches. These include standard surgical excision, which involves removing the pterygium using traditional surgical methods and more recently Simple Limbal Epithelial Transplantation. Recurrence rate of pterygium varies depending on the surgical technique employed and other factors related to the patient and surgery.The objective of this study is to assess the efficacy and safety of incorporating a single amniotic membrane with stem cells in the treatment of primary pterygium, aiming to enhance surgical outcomes and minimize recurrence rates.

02

Conditions studied

  • Pterygium of Right Eye
  • Pterygium of Left Eye
  • Pterygium of Both Eyes
  • Pterygium

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Keywords

  • Pterygium,
  • Mini-SLET
  • Conjunctival-Limbal autograft
03

In context

Pterygium

109 studies on the registry are indexed under Pterygium; 9 are open to participants now.

This study's planned enrollment of 68 is above the median of 60 across 93 interventional studies indexed under Pterygium.

Browse Pterygium studies →

Lead sponsor

Instituto de Oftalmología Fundación Conde de Valenciana is the lead sponsor of 45 studies on the registry; 10 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Patients with primary nasal pterygium > 2mm
  • Patients who can present and continue follow-up for the duration of the study
  • Acceptance to participate in the study by signing the .

Exclusion criteria

Exclusion Criteria:

  • Patients with rheumatoid arthritis
  • Collagenopathy
  • Pregnant
  • Infection, conjunctival inflammation or ocular trauma
  • Glaucoma
  • Previous ocular surgery
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

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05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Investigator, Outcomes assessor)
Enrollment
68 participants (estimated)

Study arms

  • Experimental
    Mini-SLET.

    In addition to the standard resection technique, the surgical procedure will include the application of AM with surgical adhesive at the surgical site. Following this, limbal cells will be harvested from the limbus in a resection measuring 2×2 mm, divided into six fragments, and positioned along the limbus border on the AM.

    Procedure: Pterygium Excision

  • Active comparator
    Conjunctival-Limbal Autograft.

    Pterygium will be surgically removed utilizing conventional resection techniques, entailing a blunt resection of the head, neck, and body of the pterygium. Subsequent to the resection, the surgical site will be polished using a surgical diamond burr if deemed necessary, and hemostasis will be achieved using bipolar cautery. In the case of CLAu, an autograft will be procured from the superior temporal bulbar conjunctiva. The autograft will be fixed to the surgical site using surgical adhesive.

    Procedure: Pterygium Excision

Interventions

  • ProcedurePterygium Excision

    Pterygium will be surgically removed utilizing conventional resection techniques, entailing a blunt resection of the head, neck, and body of the pterygium. Subsequent to the resection, the surgical site will be polished using a surgical diamond burr if deemed necessary, and hemostasis will be achieved using bipolar cautery.

06

What researchers measure

Primary outcomes

  1. Recurrence rate

    Any fibrovascular growth that passes onto the cornea across the limbus, will be considered a recurrence.

    Time frame: 1 month, 3, months, 6 months and 12 months after surgery.

Secondary outcomes

  1. Postoperative symptoms

    Any postoperative symptoms, such as: pain, foreign body sensation, irritation, and tearing.

    Time frame: 1 month, 3, months, 6 months and 12 months after surgery.

07

Study locations

1 of 1 sites recruiting
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 7, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06402643
Lead sponsor
Instituto de Oftalmología Fundación Conde de Valenciana
Responsible party
Enrique Graue (Head of the Cornea and Refractive Surgery Department, Instituto de Oftalmología Fundación Conde de Valenciana) — Principal investigator
First posted
May 7, 2024
Start date
Jun 22, 2024 (estimated)
Primary completion
Aug 31, 2025 (estimated)
Completion
Dec 31, 2025 (estimated)
Last update
May 7, 2024

Study contacts

Enrique Graue Hernandez
Contact
egraueh@gmail.com
55 5442 1700
Nicolas Kahuam Lopez
Contact
nicolas.kahuaml@anahuac.mx
55 5442 1700

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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