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NR 3/2004
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Częściowo spójna
interferometria laserowa – alternatywa dla kalkulacji sztucznych
soczewek wewnątrzgałkowych metodą ultradźwiękową
Partial coherent
interferometry – an alternative method for intraocular lens
power calculation performed by ultrasonography
Edward Wylęgała, Aneta Ludyga
Z Okręgowego Szpitala Kolejowego w Katowicach
Ordynator: dr n. med. Edward Wylęgała |
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| Summary: |
Purpose: To compare
axial length estimated by means of Zeiss IOLMaster and
A- scan ultrasonography and anticipate postoperative
refraction after IOL implanatation with refraction
measured after operation.
Material and methods: 26 patients were analyzed.
Measurement of axial length was performed by Zeiss
IOLMaster and A-scan ultrasonography. Preoperative
refraction was determined by both methods based on SRK /
T calculation formula and 119,0 and 120,5 A-constant for
IOL. Postoperative refraction was expressed as a
spherical equivalent and was obtained by
autokeratorefraktometr in the first day after cataract
surgery.
Results: Mean axial length measured by IOLMaster
was longer by 0.06 mm in compared to ultrasound
estimation
(p < 0.001). The correlation between pre-operative
refraction values determined by IOLMaster and
post-operative measurements was statistically
significant ( p = 0.03 ).
Conclusions: Measurement of axial length
performed by IOLMaster is longer than by ultrasonography.
IOLMaster seems to be more reliable method than
ultrasonography in intraocular artificial lens
calculation in cataract surgery. |
| Słowa kluczowe: |
IOLMaster, USG projekcja
A, długość osiowa gałki ocznej, refrakcja
przedoperacyjna i pooperacyjna. |
| Key words: |
IOLMaster, A-scan
ultrasonography, ocular axial length, preoperative and
postoperative refraction. |
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