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NR 7-9/2005
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Zmiany refrakcji oka
oraz mocy optycznej rogówki i soczewki w trakcie rozwoju
osobniczego w miarowości, krótkowzroczności i nadwzroczności
Changes of eye refraction,
corneal power and lens power during growth in emmetropia, myopia
and hyperopia
Bartłomiej J. Kałużny, Aleksandra
Koszewska-Kołodziejczak
Z Kliniki Okulistycznej Akademii Medycznej w Bydgoszczy
Kierownik: prof. dr hab. n. med. Józef Kałużny |
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| Summary: |
Purpose: The aim of
this study was to evaluate changes of eye refraction,
corneal power and lens power during growth in
emmetropia, myopia and hyperopia.
Material and methods: We examined 183 children
(363 eyes) aged 4 to 19 with emmetropia, myopia and
hyperopia. All measurements were performed after
cycloplegia with 1% tropicamidum. Total refraction and
corneal power was examined with autokeratorefractometer.
Then we used ultrasound biometer Ocuscan (Alcon, USA),
to measure axial length of the eye. Lens power was
calculated with use of SRK II formula.
Results and conclusions: Mean refractive error in
whole group in the age of 4 was +2,86D and was gradually
decreasing to reach 0D in the age of 14. Between 4th and
14th years old, myopia increases slowly and then
acceleration of this process was observed. In hyperopic
eyes between 4th and 16th years old, refractive error
decreases gradually and then stabilization was noted.
Mean corneal power between 4th and 19th years old,
decreased in emmetropia and myopia by 1.24D and 2.19D
respectively, and increased by 0.38D in children with
hyperopia. This changes took place before 10th years old.
Mean lens power between 4th and 19th years old,
decreased in emmetropia by 2.01D, in myopia by 1.43D and
in hyperopia by 1.78D. This changes took place before
12th years old. |
| Słowa kluczowe: |
rozwój gałki ocznej,
refrakcja oka, moc optyczna rogówki, moc optyczna
soczewki, wady wzroku. |
| Key words: |
eye growth, refraction of
the eye, corneal power, lens power, refractive errors. |
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