NR 2/2002
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Obraz tarczy nerwu wzrokowego w krótkowzroczności
jednostronnej u dzieci
Optic nerve disc in unilateral myopia in children
Bronisława Koraszewska-Matuszewska, Elżbieta Samochowiec-Donocik,
Ewa Pieczara, Erita Filipek
Z Katedry i Kliniki Okulistyki Dziecięcej Śląskiej Akademii Medycznej w Katowicach
Kierownik: prof. dr hab. n. med. Bronisława Koraszewska-Matuszewska |
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| Summary: |
Purpose: the evaluation of biomorphometric
parameters of optic nerve head of the eyes in myopic anisometropia, to state if glaucoma
similar changes described in adults were present.
Material and methods: 17 children, 14 girls and 3 boys at the age from
7-18 years, mean 12,6 years with unilateral myopia of mean value 8,6 D.
The parameters of optic nerve disc: total contour area (TCA), cup/disc ratio (C/D),
neuroretinal rim area (Rim), volume of neuroretinal rim (Vol. A), cup volume (Vol. B),
maximum slope (MSL) and average slope angle (ASL) were examined using laser scanning
ophthalmoscope in the TopSS system of Laser Diagnostic Technologies Inc.
The I group consists of myopic eyes, in the II group there were emmetropic eyes of the
same children.
Results: refraction in the I group ranged from -4,5 to -12D, mean -8,6D,
in the II group from 0 to +1,0D, mean 0,07D. The mean axial length of eyeballs was 25,57
SD 1,9 mm in the I and 22,47 SD 1,09 mm in II group - the difference was significant.
There was not statistically significant difference between TCA in the I (mean 1,19 SD 0,75
mm2) and II group (mean 2,13 SD 0,49 mm2). Mean C/D ratio and cup volume were
significantly smaller in myopic (C/D 0,23 SD 0,16 Vol. B -0,06 SD 0,05) than in emmetropic
eyes (C/D 0,33 SD 0,11mm3, Vol. B -0,18 SD 0,14 mm3).
Conclusions: Optic nerve disc images in myopic and glaucomatous eyes in
children are different.
Smaller optic disc cup in myopic than in emmetropic eyes can show, that children myopic
eyeballs enlarged without nerve fibers atrophy. |
| Słowa kluczowe: |
biomorfometria, laserowy skaningowy oftalmoskop, tarcza
nerwu wzrokowego, krótkowzroczność, normowzroczność, dzieci. |
| Key words: |
optic nerve disc biomorphometry, laser scanning
ophthalmoscope, myopia, emmetropia, children. |
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