Summit results

X ICER Abstracts

Tuesday, Sep 22,1992 Des Iles Borromees

CODEzC-6

SEPTEMBER

2mUESDAY

282

1

Loll

P?lOlORSFRhCTIVE TO MODERATE HYOPIA

ISU

Bye

EXCIMER

HOTELJROOM:

DES ILES D

CHAIRPERSONS:

-TIME 3:oo

Excimer Pholorefractive Keratectomv in w with Low to Mode-e Mvapia M.B. McDonald (USA)

2

3:17

w Results K.P. Thompson

3

3:34

IC L. Buralto

4

3:51

(USA)

Ablation (Italy)

a_Smai Medical Center A.B. Nesbum, M. Berlin, I. Hofbauer, 1.1. Macy. E. Maguen and J.J. Salz (USA) 5

4:OS

-aI R.J.

6

4~25

of te S.D. Kivce. M.K. Smolek. M.B. f&Donald (USA)

I

4:42

Oualitv Applegate

after m (USA)

,$.a.&~ and Excimer C.G. Van Mcllaen

S.E. Wilson

New Orleans,

IN PATIENTS

WITH

W 70112

We used 193-nm, ArF excimer laser (Visx) photorefractive keratectomy (PRX) to treat low to moderate myopia in one eye of each of 47 patients and in hoth eyes of 19 patients, for a total of 85 eyes and 66 patients from FDA phase IIa, IIb, and III. Patient age averaged 38 years (range: 18 to 64 years). Before treatment, all 85 eyes were 20/70 or worse uncorrected, were 20/30 or better best corrected, and had 1.5 D or less of refractive cylinder. Manifest refractions averaged (*se@ -3.45 f0.20 D before treatment, and +0.91 f0.12 D at 1 month, +0.28 f0.13 D at 3 months, -0.26 f0.13 D at 6 months, and -0.05 f0.09 D at 10 to 12 months after PRK. Within 1.00 D of emmatropia: 41 of 48 eyes (65%) at 6 months and 20 of 24 eyes (832) at 10 to 12 months. Uncorrected acuity of 20/40 or better: 44 of 48 eyes (92%) at 6 months and 22 or 24 eyes (92%) at 10 to 12 months. Best corrected acuity of 20/20 or better: 43 of 46 ayes (93%) at 6 months and 23 of 24 ayes (96%) at 10 to 12 months. Of 46 eyes at 6 months, 1 phase III eye (2%) lost 3 Snellen lines, to 20/40, of best corrected acuity, and 3 eyes (6%) lost 2 lines: of 24 eyes at 10 to 12 months, none lost mora than 1 line of best corrected acuity. Postoperative cornea1 clarity averaged trace haze throughout the study, and cylinder was unchanged. This study demonstrates the safety and effectiveness of excimer laser PRK for treating low to moderate myopia in humans.

KEITH P. THOMPSON (USA) LUCIO BURATI-0 (ITALY)

1

Center,

KBRATECTOXY

and

283

2 SUMMITRESULTS K.P. Thomuson tI.JSA)

PRK (Belgium)

Abstract

Not Available

284

3 ASPHERIC ABLATION L. Buratto (Italy1 Abslract

S.87

Not Available