Table of Contents - WOC 2012

WOC2012 Abstract Book
FP-IMG-SU 317 (10)
Application and Interpretation of Fundus Autofluorescence Imaging
Rao Prasan (1)
1. Welcare Hospital LLC
Purpose: Fundus autofluorescence (FAF) allows topographic mapping of
lipofuscin distribution in the retinal pigment epithelium cell monolayer, outer
retina and subretinal space. This study describes the various FAF patterns in
common retinal pathologies.
Methods: A fundus camera-based system for autofluorescence photographs
was used, and the wavelengths for excitation (580nm) and barrier (695nm)
filters were based on known transmission and autofluorescent characteristics of
the ocular media. All eyes underwent colour, red-free, fundus autofluorescence
imaging, fluorescein angiography and optical coherence tomography (OCT)
was performed in all cases.
Results: We studied the autofluorescence patterns in dry and wet AMD, central
serous chorioretinopathy, heredomacular degeneration. The autofluorescence
patterns also allowed us to recognize the peculiar characteristics of macular
pathology and better correlation with OCT findings. Some of these patterns
had prognostic as well as therapeutic values.
Conclusion: By use of this simple method of imaging and correlating the
patterns with the clinical signs, better understanding of the pathogenesis of
the macular disease is possible. Certain FAF patterns in age-related macular
degeneration predispose to occurrence of neovascularisation. Thus, this new
modality of imaging has truly clinical, prognostic and therapeutic implications
in common retina practice.
FP-IMG-SU 317 (11)
Age Dependent differences in the Choroidal and Choriocapillary
Thickness Measured by Enhanced Depth Imaging (EDI) Spectral
Domain Optical Coherence Tomography
Feucht Nikolaus (1) , Maier Mathias (1) , Lohmann Chris (1) , Feucht
1. Technical University of Munich
Purpose: To evaluate and describe choroidal thickness and the morphology of
chorioidal capillaries in healthy subjects with respect to age.
Methods: The images were obtained by using a spectral-domain OCT device
(HRA+OCT Spectrails Heidelberg Engineering). One horizontal scan with
foveal fixation and of 9,1mm (30degree angle) compromised of 100 averaged
scans with activated EDI modus was used for analysis. Additionally foveal
retinal thickness and the morphology between Bruchs membrane/RPE
complex and the larger choroidal vessels were assessed. All parameters were
obtained for 3 groups aged 20-30, 30-50 and 50-99 years.
Results: The mean subfoveal thickness was 359, 16 µm (stdev. 135, 42) for
group 1, 327, 91µm (stdev. 93,7) for group 2 and 275,92µm (stdev. 91,11) for
group 3. Thickness between Bruch/RPE complex and larger choroidal vessels
was 79µm for group 1, 114, 45µm for group 2 and 83, 5µm for group3. Central
retinal thickness showed a decrease with age from 264µm in group1 to 228µm
in group3.
Conclusion: Choroidal thickness and morphology of the area between Bruch/
RPE complex and larger choroidal vessels can be measured using enhanced
depth imaging. The interindividual deviations in this healthy population
are rather large. There seems to be a trend towards decreasing chorioidal
thickness with age.
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FP-COR-SU 318 (1)
Pterygium Excision with Sutureless Conjunctival Graft -
Retrospective Study
Dahawy Abeer (1) , Abdel Azeem Ashraf (1)
1. Al Ain Hospital
Purpose: To investigate proper attachment, recurrence rate and complications
of sutureless conjunctival graft after pterygium excision with no fibrin glue.
Methods: Thirty patients with primary pterygium were recruited. Excision of
pterygium was followed by sutureless conjunctival graft. Conjunctival graft was
attached by stretching it over the bare sclera using 2 muscle hooks, no fibrin
glue were used.
Results: The mean follow up was 14.1 ±3.9 months (range 12 to 25 months)
recurrence rate was 13.3% (4 cases) good adherence and attachment of the
graft was seen in 90% (27 cases) post operative pain was minimal, less surgical
time complications included dehiscence of the graft in 3 cases, readjustment of
the graft was done postoperatively in these cases, subconjunctival hemorrhage
in 7 cases resolved spontaneously, granuloma formation in 1 case.
Conclusions: Sutureless conjunctival graft is a new technique cost effective,
less surgical time, less postoperative pain, good graft attachment with a
recurrence rate comparable even less than the sutured graft technique in
literature.
FP-COR-SU 318 (2)
Learning Curve in Descemet Membrane Endothelial Keratoplasty
(DMEK). First Series of 135 Consecutive Cases
Dirisamer Martin (1) , Ham Lisanne (1) , Droutsas Konstantinos (1) , Van Dijk
Korine (1) , Melles Gerrit (1) , Dapena Isabel
1. Netherlands Institute for Innovative Ocular Surgery
Purpose: To evaluate the learning curve in Descemet membrane endothelial
keratoplasty (DMEK) in the management of corneal endothelial disorders.
Methods: In a first group of 135 consecutive eyes a DMEK was performed. To
determine the extent of a possible learning curve in DMEK surgery, the whole
group was divided into three subgroups of 45 patients, to compare clinical
outcomes at 1,3 and 6 months.
Results: Among the three groups clinical outcomes were similar, with 73% of
cases achieving a BCVA of ?20/25 (?0.8) and an average ECD of 1747 ± 527
cells/mm 2, at 6 months. Graft detachment was the main complication and
correlated with intraoperative vitreous pressure (p