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To compare anatomic and functional results, and to evaluate postoperatively the healing process in 2 different techniques for the closure of the macular holes (MH)
Patients with macular holes classified in stages 3 and 4 will be randomized into 2 groups. . In Group A, patients will undergo peeling with complete removal of the internal limiting membrane (ILM) and in the group B, the inverted ILM peeling technique will be performed. The 20% sulfur hexafluoride (SF6) gas will be used as a tamponade agent in all surgeries, and patients will be instructed to avoid the prone position for 5 days.
OCT images will be performed in the first 5 postoperative days and months 1, 3 and 6.
The primary outcome is anatomic closure of the MH closure in the month 6. The second outcomes are: mean best corrected visual acuity (BCVA) at month 6, mean change in the BCVA at month 6; integrity of the perifoveal external limiting membrane and ellipsoid zone on Optical Coherence Tomography (OCT); MH closure rate over time in days; functional improvement of microperimetry Statistical analysis will be performed with Student t-test and the p-value of ≤ 0.05 is considered significant.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Group A: Conventional ILM peeling | Active Comparator | peeling with complete removal of the internal limiting membrane (ILM) |
|
| GroupB: Inverted ILM Peeling | Active Comparator | the inverted ILM peeling technique, in which the ILM is left in the edge of the macular hole and the free area is inverted over the macular hole before fluid-air exchange |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Conventional ILM Peeling | Procedure | peeling with complete removal of the internal limiting membrane (ILM) |
|
| Measure | Description | Time Frame |
|---|---|---|
| Rate of Anatomic closure | Rate of anatomic macular hole closure in the OCT at month 6 | Month 6 post operative |
| Measure | Description | Time Frame |
|---|---|---|
| BCVA mean | mean best corrected visual acuity (BCVA) at month 6 | Month 6 post operative |
| BCVA change | change in the BCVA at month 6 | Screening and Month 6 post operative |
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Inclusion Criteria:
> Stage 3 and 4 macular holes with visual acuity between 20/30 and 20/800 according to the ETDRS chart.
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Mauricio Maia, MD, PhD | Contact | +55-18-991137727 | maiamauricio@terra.com.br | |
| Luci p Silva, PhD, MBA | Contact | 11971571967 | luci.pesquisa@gmail.com |
| Name | Affiliation | Role |
|---|---|---|
| Mauricio Maia, MD, PhD | Federal University of São Paulo | Study Director |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Dept. of Ophthalmology | Recruiting | São Paulo | 04023-062 | Brazil |
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| ID | Term |
|---|---|
| D012167 | Retinal Perforations |
| ID | Term |
|---|---|
| D012164 | Retinal Diseases |
| D005128 | Eye Diseases |
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In Group A, patients will undergo peeling with complete removal of the internal limiting membrane (ILM) and in the group B, the inverted ILM peeling technique will be performed.
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| Inverted ILM Peeling | Procedure | the inverted ILM peeling technique - the technique of Inverted flap described by Michalewska, in which the ILM is left in the edge of the macular hole and the free area is inverted over the macular hole before fluid-air exchange |
|
| Integrity Membrane measured in microns (μm) by OCT | In the month 6, the area of discontinuity of the perifoveal external limiting membrane and ellipsoid zone in the OCT images will be measured in microns (μm) and correlated between groups | Month 6 post operative |