Clinical trial NCT03946267: Infracyanine Green vs Brilliant Blue G in Macular Hole Inverted Flap Surgery: A Swept Source OCT Analysis.
Official title: Infracyanine Green vs Brilliant Blue G in Inverted Flap Surgery for Medium to Large Macular Holes: A Swept Source OCT Analysis.
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Macular Holes
Keywords: Large macular hole
Inverted flap surgery
Infracyanine green
Brilliant blue G
Swept source OCT
Lead sponsor: Azienda Ospedaliera Universitaria Policlinico Paolo Giaccone Palermo
Sponsor class: OTHER
First posted: 2019-05-10
Enrollment: 43
Sex: ALL
Minimum age (years): 45
Maximum age (years): 85
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Intervention model description: Patients assigned to undergo inverted flap surgery with infracyanine green or with brilliant blue G using the sealed-envelope randomization technique. The interventional study model consists of a randomized controlled trial study design.
Primary purpose: TREATMENT

Brief summary: This study will compare by swept-source optical coherence tomography (SS-OCT) the retinal morphology after inverted internal limiting membrane (I-ILM) flap vitreoretinal surgery for medium-to-large macular holes using infracyanine green (IFCG) vs brilliant blue G (BBG) dyeing. It is a single-center prospective, randomized study. One group of patients will undergo I-ILM vitrectomy with IFCG staining, the other vitrectomy with BBG staining. Postoperative twelve-month corrected distance visual acuity, macular hole closure rate, and SS-OCT parameters will be compared and statistically analyzed. The aim of the study is to verify if these parameters can be negatively affected by toxicity related to the use of one of the two dyes.

Detailed description: The purpose of this study is to compare by swept-source optical coherence tomography (SS-OCT) the retinal morphology after inverted internal limiting membrane flap (I-ILM) surgery for medium-to-large macular holes (FTMHs) using infracyanine green (IFCG) vs brilliant blue G (BBG). This prospective randomized study include 40 eyes with ≥ 400 µ idiopathic FTMH undergoing IFCG or BBG-stained I-ILM technique. Just before surgery, randomization is performed using the sealed-envelope technique, based on the patients' surgical chart number. The random allocation sequence is generated by the trial statistician pulling 41 standard-sized pieces of paper out of a hat. Twenty pieces of paper are marked with the Letter I, for IFCG, and 21 with the Letter B, for BBG. The trial statistician then sequentially puts each piece of paper into 41 sealed opaque envelopes. These envelopes are numbered 1 to 41 and given to the surgeons. Patients are numbered randomly from 1 to 41 based on a surgical chart number related to the baseline testing session and intervention period. Clinical data collection and measurement of outcome variables are performed by personnel masked to the randomization process and not been directly involved in the patients' surgery.

Eligibility criteria: Inclusion Criteria:

* Phakic or pseudophakic patients affected with medium to large idiopathic full thickness macular hole (FTMH), with a minimum preoperative diameter of 400 µ

Exclusion Criteria:

* Patients with chorioretinal diseases except FTMH, myopia \> 5 D, history of glaucoma, previous trauma or ocular surgery other than cataract extraction, or conditions affecting visual acuity except cataract.

Primary outcomes:
measure: Postoperative macular hole closure rate and morphology
timeFrame: twelve months
measure: Postoperative mean corrected distance visual acuity
timeFrame: twelve months
measure: Postoperative sizes of ellipsoid zone (EZ) and external limiting membrane (ELM) defects
timeFrame: twelve months
measure: Thickness maps of the 1 mm central foveal thickness; second 3-mm grid including parafoveal macular area; second and the third 6-mm grid including parafoveal and perifoveal ganglion cells and inner plexiform layer; peripapillary nerve fiber layer.
timeFrame: twelve months
Secondary outcomes:
Other outcomes:
Locations:
city: Palermo
country: Italy
facility: Azienda Ospedaliera Universitaria Policlinico Paolo Giaccone
Study officials:
affiliation: AOUP Paolo Giaccone, Palermo
name: Salvatore Cillino, MD, PhD
role: PRINCIPAL_INVESTIGATOR
References:
citation: Michalewska Z, Michalewski J, Adelman RA, Nawrocki J. Inverted internal limiting membrane flap technique for large macular holes. Ophthalmology. 2010 Oct;117(10):2018-25. doi: 10.1016/j.ophtha.2010.02.011. Epub 2010 Jun 11.
citation: Haritoglou C, Tadayoni R, May CA, Gass CA, Freyer W, Priglinger SG, Kampik A. Short-term in vivo evaluation of novel vital dyes for intraocular surgery. Retina. 2006 Jul-Aug;26(6):673-8. doi: 10.1097/01.iae.0000236505.42892.54.
citation: Schmid-Kubista KE, Lamar PD, Schenk A, Stolba U, Binder S. Comparison of macular function and visual fields after membrane blue or infracyanine green staining in vitreoretinal surgery. Graefes Arch Clin Exp Ophthalmol. 2010 Mar;248(3):381-8. doi: 10.1007/s00417-009-1213-4. Epub 2009 Oct 13.
citation: Burk SE, Da Mata AP, Snyder ME, Rosa RH Jr, Foster RE. Indocyanine green-assisted peeling of the retinal internal limiting membrane. Ophthalmology. 2000 Nov;107(11):2010-4. doi: 10.1016/s0161-6420(00)00375-4.
citation: Iriyama A, Uchida S, Yanagi Y, Tamaki Y, Inoue Y, Matsuura K, Kadonosono K, Araie M. Effects of indocyanine green on retinal ganglion cells. Invest Ophthalmol Vis Sci. 2004 Mar;45(3):943-7. doi: 10.1167/iovs.03-1026.
citation: Baba T, Hagiwara A, Sato E, Arai M, Oshitari T, Yamamoto S. Comparison of vitrectomy with brilliant blue G or indocyanine green on retinal microstructure and function of eyes with macular hole. Ophthalmology. 2012 Dec;119(12):2609-15. doi: 10.1016/j.ophtha.2012.06.048. Epub 2012 Aug 24.
citation: Park JH, Lee SM, Park SW, Lee JE, Byon IS. Comparative analysis of large macular hole surgery using an internal limiting membrane insertion versus inverted flap technique. Br J Ophthalmol. 2019 Feb;103(2):245-250. doi: 10.1136/bjophthalmol-2017-311770. Epub 2018 Apr 2.