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Use of a new synthetic membrane in surgery for ocular surface reconstruction

Polydioxanone membrane for guided conjunctival tissue reconstruction: an experimental model

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
REBEC
Registry ID
RBR-10vzd55h
Enrollment
16
Registered
2026-04-30
Start date
2026-06-01
Completion date
Unknown
Last updated
2026-06-01

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Conjunctival Neoplasms

Interventions

This is a non-randomized, controlled, interventional clinical study with a parallel two-arm design. A total of 16 participants with ocular surface tumors will be included and allocated in an alternati

Sponsors

Banco de Olhos de Sorocaba
Lead Sponsor
Universidade Federal de São Paulo (UNIFESP)
Collaborator

Eligibility

Age
18 Years to No maximum

Inclusion criteria

Inclusion criteria: Participants of both genders; age 18 years or older; presence of one of the following ocular surface tumors: conjunctival nevus, conjunctival melanoma, ocular surface squamous neoplasia, or primary acquired melanosis of the conjunctiva; best corrected visual acuity better than 20/40 in the contralateral eye; provision of written informed consent

Exclusion criteria

Exclusion criteria: Presence of corneal disease in the affected eye, including previous opacities, scars, dystrophies, or infections; systemic diseases with ocular involvement; pregnancy; previous ocular surface surgery in the affected eye; allergy to any medication used in the postoperative period; glaucoma or ocular hypertension, eyelid disease, or lacrimal disease in the affected eye; any ophthalmologic condition or disease in the contralateral eye other than low refractive error; presence of a small lesion allowing primary conjunctival closure

Design outcomes

Primary

MeasureTime frame
To evaluate the effectiveness of the polydioxanone membrane in conjunctival reconstruction. Assessed by clinical examination using slit-lamp biomicroscopy. Parameters to be observed include complete epithelialization rate, degree of inflammation, fibrosis, and graft integration during a 90-day follow-up period.

Secondary

MeasureTime frame
To evaluate time to complete epithelialization. Assessed by clinical examination. It will be measured in days until full epithelial coverage of the ocular surface.;To evaluate postoperative inflammation. Assessed by slit-lamp biomicroscopy. It will be graded according to clinical inflammatory signs during follow-up.;To evaluate postoperative complications. Assessed by clinical examination. It will be recorded as the presence or absence of complications such as infection, symblepharon, or graft displacement.;To evaluate visual acuity. Assessed using standardized visual acuity testing. It will be measured using the Snellen scale during follow-up.

Countries

BR

Contacts

Public ContactDaniel Diniz da Gama

Universidade Federal de São Paulo (UNIFESP)

danieldiniz@outlook.com+55 011 995516312

Outcome results

None listed

Source: REBEC (via WHO ICTRP) · Data processed: Jun 11, 2026