ISSN: 1300-0365
Dil: Türkçe
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Ultrasonographic Measurement Of Ocular Refractive Components In Eyes With Various Refractive States
Hüseyin BAYRAMALAR*, Serap ÖZDEN**, Mehmet H. ERGİN***, Hikmet TUTARLI*
*Dr. Fırat ÜTF. Göz Hast. ABD,**Yard. Doç. Dr. Fırat ÜTF. Göz Hast. ABD,***Prof. Dr. Fırat ÜTF. Göz Hast. ABD, ELAZIĞ
Ultrasonographic measurements were done by contact technique in 231 eyes of 118 patients with the ages varying
between 20 and 40. Patients were classified in to 5 groups according to their refraction states; high myopia, myopia,
emmetropia, hypermetropia and high hypermetropia.
Parameters like axial eye length, anterior chamber depth, antero-posterior lens diameter and vitreus length were
measured with aut^biometric method using "Teknar Ophthasonic A-Scan/B-Scan III Unit". In all groups, a significant
positive correlation between vitreous length and axial length was determined (p<0.001). In emmetropic eyes, there was a
significant positive correlation between anterior chamber depth and axial length (p<0.001). There was, generally, a
negative correlation both in between lens thickness and axial length, and in between lens thickness and anterior
chamber depth. In myopic eyes, statistically sigificant positive correlation was determined between refractive state and
axial length (p<0.001). While the average axial length in emmetropic eyes was determined as 23.19 mm, It was seen that
there was a wide variation in axial length (4.35 mm).
When our results were evaluated together with literature, we came to a conclusion that the most important parameter
determining the refraction is axial eye length and the vireous length that is the component of axial length.Keywords: Ultrasonographic measurement, Axial length. Anterior chamber depth, Lens thickness, Vitreous length, Refraction
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