Table of Contents - WOC 2012

WOC2012 Abstract Book
IS-REF-FR 111 (7)
Randomized, Contralateral Comparison of Nidek EC5000 CXIII
Optimized Prolate Ablation vs. Conventional Ablation for Myopia
Waring III George, El-Danasoury Alaa (2) , Bains Harkaran S., Pieger Stefan (3)
2. Magrabi Hospitals and Centers
4. NIDEK
Purpose: To compare one year postoperative refractive and wavefront
outcomes and corneal topographic parameters of patients who underwent
myopic laser in situ keratomileusis (LASIK) with optimized prolate ablation
(OPA) in one eye (OPA group) and conventional ablation (conventional group)
in the fellow eye.
Methods: A randomized, prospective, contralateral eye study was performed
on 19 myopic patients. The mean manifest refractive spherical equivalent
(MRSE) was -3.91 ± 1.44 D for the OPA group and -3.96 ± 1.34 D conventional
group. Lasik was performed with the Intralase laser keratome and Nidek EC
5000 CXIII excimer laser using OPA combined wavefront-topography guided
algorithm in one eye and the conventional algorithm in the other. Topographic
features evaluated included corneal asphericity (Q) at 4.5 mm and 6 mm with
an ellipsoid fitting model, classification of the cornea with the corneal Navigator
software, and corneal spherical aberration at 6 mm pupil. Data are reported for
12 months postoperatively.
Results: There was a significantly greater statistical increase in corneal
spherical aberration in the conventional group (0.10 µm in the OPA group and
0.20 µm in the conventional group) (P=0.0003). Q at 4.5 mm was statistically
lower for the OPA group (0.11) -more prolate- compared to the conventional
group (0.26) (P=0.037). Q at 6.00 mm was statistically lower for the OPA group
(0.12) compared to the conventional group (0.30) (P=0.003).
Conclusion: LASIK for myopia with the Nidek optimized prolate ablation
produces less changes in corneal asphericity, induces less spherical aberration,
and results in larger functional optical zones compared to conventional ablation.
Amblyopia: Screening and Treatment
Fri 17 Feb 13:30 - 15:00 Conference Room A1
IS-STR-FR 112 (1)
The Workup of a Child with Amblyopia
Bateman Bronwyn (1)
1. AAPO&S
Abstract not available
IS-STR-FR 112 (2)
Instrument-based Screening
Neeley Daniel (1)
1. Indiana University
Early detection of amblyopia risk factors permits the initiation of treatment at a
young age when children are most responsive to therapy. Unfortunately,
younger children are also the most difficult to screen using traditional visual
acuity testing techniques. Therefore, for younger children, the preferred
methodology for detecting amblyopia risk factors is instrument-based
screening, primarily using photoscreeners and autorefractors. This session will
review currently available technology and age-appropriate indications for use.
IS-STR-FR 112 (3)
Vision Screening in Pediatric Population
Akbar Fatma (1)
1. Jeddah Eyes Hospital
All children should be screened for risk factors associated with amblyopia
.Vision screening is to detect poor vision or risk factors that interfere with
vision and normal visual development. It is accepted that early diagnosis and
treatment yield better visual outcomes, but are screening programs that are
available now truly effective or not?
136
IS-STR-FR 112 (4)
Occlusion Therapy
Sprunger Derek (1)
1. ISA
Probably the oldest documented and most commonly utilized treatment of
amblyopia is occlusion therapy. Many variations of occlusion therapy have
evolved over the years, and include frequency, duration, and mode of occlusion.
Advantages of occlusion relative to other treatment modalities include longer
history of efficacy, ease of titration, low expense, rapid response, and rare, if
ever, secondary reverse amblyopia. Disadvantages include poor compliance,
dermatologic issues and disruption of fusion. Occlusion therapy remains a
viable treatment for amblyopia in children and young adults.
IS-STR-FR 112 (5)
Atropine Penalization
Repka Michael (1)
1. Johns Hopkins University
The use of atropine eye drops in the fellow eye of children with amblyopia has
been long used in ophthalmology. However, it is often considered a poor
second choice for the management of strabismic, anisometropic, and both
combined types of amblyopia. In fact as iniitial therapy of moderate amblyopia,
atropine appears to work as well as occlusion therapy. This lecture will discuss
the evidence of effectiveness, the optimum dose, and correct application of this
important alternative approach to treatment.
Conjunctival Tumors
Fri 17 Feb 13:30 - 15:00 Conference Room A2
IS-ONC-FR 113 (1)
Rare Conjunctival and Corneal Tumors
Al-Rajhi Ali (1)
1. KKESH
Rare tumors may arise from conjunctiva or cornea. These include squamous
cell carcinoma (SCC) of the cornea, and exophytic or endophytic or pigmented
SCC of the conjunctiva and perforated globe on presentation. Other rare tumors
include xanthogranuloma, lymphangiectasia hemorrhagica, mucoepidermoid
ca, conjunctival hemangioblastoma, lymphangioma, lacrimal gland choristoma,
cavernous hemangioma of the conjunctiva, dermolipoma, adenoid cystic
carcinomas of accessory lacrimal glands, brown corneal pigmentation from
primary acquired melanosis and fibrous histiocytoma. Examples of these will
be presented.
IS-ONC-FR 113 (2)
Sentinel Lymph Node Biopsy for Conjunctival Melanoma
Esmaeli Bita (1)
1. The University of Texas M D Anderson Cancer Center
Conjunctival melanoma has the potential for metastasis with the regional
lymph nodes as the most common first site of metastasis. In recent years,
sentinel lymph node (SLN) biopsy techniques have been used to identify
microscopic metastasis in the regional lymph nodes in patients with
conjunctival melanoma. In this section the indications for sentinel lymph node
biopsy, technical aspects of SLN biopsy, and the overall yield of SLN biopsy
will be discussed.