Table of Contents - WOC 2012

WOC2012 Abstract Book
Free Paper: Retina - Medical
Thu 16 Feb 13:00 - 14:30 Conference Room A4
FP-RET-TH 22 (1)
Morphological and Functional Correlation of Macular Pathology in
Idiopathic ERM Using Spectral Domain Optical Coherence
Tomography
Bashir Yasfir (1) , Kumar Yadav Naresh
1. Narayana Nethralaya Eye Institute
Purpose: To study the relationship between retinal thickening and visual acuity
in the macula in eyes with idiopathic epiretinal membrane. To comment on the
status of photoreceptor inner and outer segment (is/os) junction.
Methods: 54 eyes of patients with idiopathic erm and 54 eyes of normal control
subjects were examined. Retinal thickness was measured at fovea (within a
circle of diameter 1mm), parafovea (within a circle of diameter between 1 to
3 mm ) and perifovea (within a circle of diameter between 3 mm and 6 mm)
using sd-oct.
Results: the mean retinal thickness of foveal region (p< 0.000004), parafoveal
(p< 0.00008) and perifoveal (p< 0.0005) regions in the macula was found to be
significantly greater in eyes with idiopathic erm than in the normal eyes. Logmar
of visual acuity (mean=o.33) was worse in eyes with disrupted photoreceptor
junction. Retinal thickness was significantly more in eyes with disrupted is/os
junction (p < 0.05). Conclusion: Disruption of photoreceptor junction in eyes
with idiopathic erm can have an influence on the post operative vision, thus,
having a prognostic significance.
FP-RET-TH 22 (2)
A Novel Optical Coherence Tomographic Predictive Factor for
Macular Hole Closure
Rajendran Anand (1) , Patwardhan Aditi (1) , Kanakamedala Ashok (1) , Ramasamy
Kim (1)
1. Aravind Eye Hospital
Purpose: To evaluate a novel optical coherence tomographic (OCT)
mathematical factor to predict type of macular hole (MH) closure post
vitrectomy.
Methods: A review of 78 eyes with idiopathic MH that underwent pars plana
vitrectomy, internal limiting membrane peeling and gas tamponade were
included. Pre- and postoperative clinical, OCT features and acuity gains
were analyzed. The type of MH closure was assessed. A novel mathematical
parameter, the Macular Hole Coefficient (MHC), ratio of the internal diameter
(shortest distance between the edges of the macular hole) to the vertical height
of the MH on OCT, was compared to MH closure type and clinical outcome.
Results: Of the 78 eyes, 69 had type 1 (closed without defect); 9 had type 2
(closed with defect) closure. Average MHC for type 1 was significantly lesser
[1.73 (SD=0.52)] than those with type 2 closure [3.20 (SD=0.88)] [p< 0. 001]
.Statistical analysis was done using STATA software (version 8.1). Visual acuity
gain was more significant for type 1 (p