Table of Contents - WOC 2012

WOC2012 Abstract Book
FP-CAT-TH 26 (3)
Accurate Intraocular Lens Power Calculation Formulas for Eyeballs
with Axial Length Smaller than 22 mm
Stopyra Wiktor (1) ,
1. Zeromski Specialist Hospital
Purpose: Comparison of intraocular lens power calculation formulas accuracy
for eyeballs smaller than 22 mm.
Methods: 89 patients with eyeball axial length between 20,33 mm and 21,99
mm were examined. Each patient before cataract surgery had calculated
intraocular lens power according to six formulas (SRK II, SRK T, Holladay
I, Hoffer Q, Binkhorst, Haigis). Hoffer Q implant power was selected. Visual
acuity on Snellen chart was examined thirty days after cataract surgery.
Results: 86 patients (97%) after cataract surgery had correct visual acuity (1,0
on Snellen chart). In other formulas correct visual acuity would be achieved in
following cases: Binkhorst - 79 patients, Holladay I - 76 patients, SRK T - 61
patients, SRK II - 46 patients, Haigis - 1 patient.
Conclusions:
1. Hoffer Q formula is recommended for intraocular lens power calculation for
eyeballs with axial length smaller than 22 mm.
2. Binkhorst and Holladay I formulas seem to be satisfactory for intraocular
lens power calculation for eyeballs smaller than 22 mm.
3. Haigis formula is contraindicated for intraocular lens power calculation for
eyeballs with axial length smaller than 22 mm.
FP-CAT-TH 26 (4)
The Effect of ±1-Adrenergic Blocker on Phacoemulsification
Koh Changhyun (1) , Kim Eun Kyoung (1) , Chung Sung Kun (1) ,
1. Department of Ophthalmology and Visual Science, The Catholic University of
Korea
Purpose: To evaluate the effect of ±1-adrenergic blocker on phacoemulsification
and the preventive effect ±1AB cessation on Intraoperative Floppy Iris
Syndrome before cataract surgery.
Methods: A prospective study was performed, in which 92 eyes of 60 patients
undergoing cataract surgery. Cases were divided into three groups: Using
±1AB without cessation before surgery (32 eyes), using ±1AB with cessation
before surgery (31 eyes), and not-using ±1AB (29 eyes). Preoperative clinical
examination was done involving maximum dilated pupil diameter and best
corrected visual acuity. At postoperative 3 months, best corrected visual acuity
was measured.
Results: Preoperative maximum pupil diameter of patients who treated with
±1AB were smaller than that of patients not treated with ±1AB (P=0.027,
P=0.018 respectively); however, there were no significant differences in
absolute phaco time during phacoemulsification (P=0.207) and 3-months
postoperative best corrected visual acuity among three groups (P=0.189).
Conclusions: Importantly, there seems to be a significant correlation between
±1AB and developing IFIS. To prevent complications like IFIS, surgeons should
check full medical histories involving the medication history like ±1AB, as well
as preoperative evaluations like maximum pupil diameter. However, cessation
of ±1AB had no preventive effect in developing IFIS.
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FP-CAT-TH 26 (5)
Toric IOL Versus Adjustable Incision for Treatment of Mild to
Moderate Astigmatism in Phacoemulsification
Kotb Ali Khaled (1) ,
1. Egypt Air hospital
Purpose: To compare the efficacy of implantation of toric IOL (AcrySof Toric
lens T3,T4,T5) with adjustable incision in treatment of mild to moderate
astigmatism in phacoemulsification, in subjects with mild to moderate
astigmatism in a 12 months study.
Methods: Study population: 114 eyes of 71 patients with cataract and
preoperative mild to moderate astigmatism (-0.75 D to -3.0 D) were classified
into two groups: (1) group A; (2) group B. Main outcome included: postoperative
astigmatism, visual acuity, refractive errors, K values.
Results: There were more improvements as regard preoperative astigmatic
error, UCVA, in patients with moderate astigmatism (-1.50 D up to -3.0 D)
in group A with toric IOL, than in the group B with adjustable incision, and
more improvement as regard preoperative astigmatic error, UCVA, in mild
astigmatism (-0.75 D up to -1.25 D) in group B with adjustable incision than in
group A with toric IOL.
Conclusion: Toric IOL is a good option for treatment of moderate preoperative
astigmatism (1.25 to 3.00) than adjustable incision but in mild astigmatism
(-0.75 D up to -1.5 D) adjustable incision is more effective.
FP-CAT-TH 26 (6)
Fibrin Glue Assisted Scleral Fixated IOL in Cases Lacking Posterior
Support - Our Experience
Kodur Satyamyrthy (1) ,
1. M.M. Joshi Eye Institute
Purpose: To evaluate safety and efficacy of newly described technique of
sutureless transscleral fixation of posterior chamber IOL using fibrin glue.
Method: 50 phakic eyes of 46 patients underwent SFIOL surgery using fibrin
glue to secure the implant. The age group of patients was 20-60yrs.The
eyes were assessed for the intra op and post operative complications of lens
decentration, inflammation, vitreous haemorrhage. Patients were followed up
for 3 months period for visual improvement.
Result: Out of 50 eyes post operative BCVA was 6/12 - 6/18 for 20 patients.
Two patients developed severe inflammation, one patient had vitreous
haemorrhage who required anterior vitrectomy and 1 patient had retinal
detachment. Lens centration was good in 49 patients.
Conclusion: The fibrin glue assisted SFIOL technique is relatively complication
free due to absence of suture and its complications. The results indicate that it
is safe and effective method for aphakic correction in cases lacking posterior
capsular support.
FP-CAT-TH 26 (7)
Couching and its Techniques in South West Nigeria: an
Unacceptable Method of Cataract Treatment
Isawumi Michaeline (1) , Kolawole Olubayo (2) , Hassan Mustapha (1) ,
1. Ophthalmological Society of Nigeria, Osun State University
2. Ophthalmological Society of Nigeria
Objective/Purpose: To find out the techniques of couching and Knowledge-
Attitudes-and-Practices of subjects.
Materials and Methods: A prospective study of consecutive new cases in a
Tertiary Hospital Eye clinic set up. Information obtained from structured
questionnaire and eye examination. SPSS v.15 used for data entry, descriptive
analysis and deriving proportions of qualitative variables.
Results: Fifteen subjects and 20 eyes. Nine (60%) males and 6 (40%) females.
Mean age72.40, SD 8.0. Commonest presenting complaint was “I cannot see
properly/clearly” (26.7%). Seventy five (75%) before and 60% still remained
blind after corrections, P value = 0.032. Friends and neighbours mostly
introduced subjects to couching (26.7% each). Commonest methods used
sharp objects/needling (45%). “Supine” position assumed (75%) of time. Eyes
done at Couchers› (85%). Painful in 73.3%. About 90% said “no” to a repeat
procedure.
Conclusions: Couching methods were crude. Quality of vision and life were
poor. Public enlightenment, affordable and accessible cataract surgical
services required to phase out couching in our society.