Clinicopathologic Findings for Macular Disease - Full Text View

Purpose

this study is to analyze and compare the ultrastructure of the retinal and vitreous plane of the epiretinal membrane and internal limiting membrane removed during macular surgery and to evaluate relation between the ultrastructure of the epiretinal membrane and internal limiting membrane and surgical outcomes.

Condition	Intervention
Macular Disease	Procedure: vitrectomy for macular disease

Study Type:	Interventional
Study Design:	Intervention Model: Single Group Assignment Masking: Open Label Primary Purpose: Diagnostic
Official Title:	Clinicopathologic Findings for Macular Disease

Further study details as provided by Hallym University Medical Center:

Primary Outcome Measures:

spectral domain optical coherence tomography [ Time Frame: baseline, 1week, 1month, 3 month ] [ Designated as safety issue: Yes ]
The central 1mm subfield thickness the average macular thickness the inner nuclear layer thickness outer nuclear layer thickness outer plexiform layer thickness photoreceptor integrity ILM map RPE map
best corrected visual acuity [ Time Frame: baseline, 1 month, 3 months ] [ Designated as safety issue: Yes ]
logMAR

Secondary Outcome Measures:

electron microscopy finding of internal limiting membrane [ Time Frame: during operation ] [ Designated as safety issue: Yes ]
visual field [ Time Frame: baseline, postoperative 1 months, 3 months ] [ Designated as safety issue: Yes ]
humpley visual field
preferential hyperacuity perimeter [ Time Frame: baseline, postoperative 1 months, 3 months ] [ Designated as safety issue: Yes ]
ForeseePHP 2.05; Notal Vision, Tel Aviv, Israel

Estimated Enrollment:	60
Study Start Date:	May 2009
Study Completion Date:	June 2010
Primary Completion Date:	October 2009 (Final data collection date for primary outcome measure)

Arms	Assigned Interventions
Experimental: surgery	Procedure: vitrectomy for macular disease three-port pars plana vitrectomy was performed in each case using a vitreous cutter surrounded by a coaxial optic fiber connected to a xenon light source (Lausanne set, Oertli, Switzerland-developed at Jules Gonin, Lausanne, by Gonvers and Bovey). Separation of the posterior hyaloid membrane was performed when necessary. Visualization of the fundus was achieved with a special noncontact wide-angle viewing system 37 during vitrectomy and with a planoconcave contact lens for macular peeling. The MEM was peeled in the macular area using an end gripping forceps. Other Name: vitrectomy(DORC)

Arms

Assigned Interventions

Experimental: surgery

Procedure: vitrectomy for macular disease

three-port pars plana vitrectomy was performed in each case using a vitreous cutter surrounded by a coaxial optic fiber connected to a xenon light source (Lausanne set, Oertli, Switzerland-developed at Jules Gonin, Lausanne, by Gonvers and Bovey). Separation of the posterior hyaloid membrane was performed when necessary. Visualization of the fundus was achieved with a special noncontact wide-angle viewing system 37 during vitrectomy and with a planoconcave contact lens for macular peeling. The MEM was peeled in the macular area using an end gripping forceps.

Other Name: vitrectomy(DORC)

Detailed Description:

prospective, interventional study and includes patients who underwent vitrectomy,peeling of an epiretinal membrane and internal limiting membrane excision with or without intraoperative intraocular ICG injection.

Excised specimens were placed on a Millipore filter, fixed in a paraformaldehyde solution, and examined by light and transmission electron microscopy. Ultrathin sections were stained with uranyl acetate-lead citrate and inspected in a Zeiss EM electron microscope. The assessment was done in a blinded, masked fashion so that the clinicians who reviewed the histologic specimens

Eligibility

Ages Eligible for Study:	20 Years and older
Genders Eligible for Study:	Both
Accepts Healthy Volunteers:	No

Criteria

Inclusion Criteria:

patients who underwent vitrectomy,peeling of an idiopathic MEM and ILM excision with or without intraoperative intraocular ICG injectio

Exclusion Criteria:

the presence of macular hole or lamellar macular hole previous vitreoretinal surgery the presence of any other macular pathologic features potentially interfering with histologic results (such as diabetic retinopathy or age-related macular degeneration).

Contacts and Locations

Please refer to this study by its ClinicalTrials.gov identifier: NCT00994227

Locations

Korea, Republic of
JiWon Lim
Seoul, Korea, Republic of

Sponsors and Collaborators

Hallym University Medical Center

More Information

No publications provided by Hallym University Medical Center

Additional publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):

Lim JW, Kim HK, Cho DY. Macular function and ultrastructure of the internal limiting membrane removed during surgery for idiopathic epiretinal membrane. Clin Experiment Ophthalmol. 2011 Jan;39(1):9-14.

Responsible Party:	hallym unuversity medical center, department of ophthalmology
ClinicalTrials.gov Identifier:	NCT00994227 History of Changes
Other Study ID Numbers:	2009-10-10
Study First Received:	October 13, 2009
Last Updated:	April 20, 2011
Health Authority:	South Korea: Institutional Review Board

Keywords provided by Hallym University Medical Center:

electron microscopy
internal limiting membrane
macular disease
optical coherence tomography

ClinicalTrials.gov processed this record on May 19, 2013