Comparison of biometric methods in young children with congenital cataracts in their eyes

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Abstract

BACKGROUND: Relevant keratometric and biometric indicators are necessary for intraocular lens (IOL) power calculation, which is difficult to verify in young children.

AIM: Evaluation of the accuracy of various ultrasound methods and optical biometry for axial length measurement in young children with congenital cataracts.

MATERIAL AND METHODS: Forty-six children (74 eyes) with congenital cataracts (43 eyes) and pseudophakia (31 eyes) at the age of 6 months to 4 years were examined. Various methods measured the axial length: ultrasound A-scan under general anesthesia by US-4000, ultrasound B-scan without general anesthesia by Voluson E8, and optical biometry by AL-Scan in cases of transparent optics.

RESULTS: The greater axial length difference was observed between A-scan and optical biometry (less by 0,78 mm) than between B-scan and optical biometry (more by 0,27 mm). The median axial length difference between A-scan and B-scan was equal for infants and young children with congenital cataracts (0,525 mm and 0,535 mm, respectively).

CONCLUSION: Axial length should be measured by different methods in young children with their further comparison to obtaining more accurate biometric indicators for IOL power calculation. The decrease of 1–2 mm in axial length, which occurs during the A-scan, can lead to errors in the IOL calculation of 3–6 diopters and unplanned refraction in the long-term period.

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About the authors

T. B. Kruglova

Helmholtz National Medical Research Center of Eye Diseases

Author for correspondence.
Email: krugtb@yandex.ru
ORCID iD: 0000-0003-4193-681X

MD, Dr. Med. Sciences

Russian Federation, Moscow

Tatyana N. Kiseleva

Helmholtz National Medical Research Center of Eye Diseases

Email: tkiseleva05@gmail.com
ORCID iD: 0000-0002-9185-6407

MD, Dr. Med. Sciences, Professor

Russian Federation, Moscow

L. A. Katargina

Helmholtz National Medical Research Center of Eye Diseases

Email: katargina@igb.ru
ORCID iD: 0000-0002-4857-0374

MD, Dr. Med. Sciences, Professor

Russian Federation, Moscow

N. S. Egiyan

Helmholtz National Medical Research Center of Eye Diseases

Email: nairadom@mail.ru
ORCID iD: 0000-0001-9906-4706

MD, PhD

Russian Federation, Moscow

A. S. Mamykina

Helmholtz National Medical Research Center of Eye Diseases

Email: alexandraugust1@gmail.com
ORCID iD: 0000-0003-3521-6381

Researcher

Russian Federation, Moscow

R. V. Kalinichenko

Helmholtz National Medical Research Center of Eye Diseases

Email: romann2008@gmail.com
ORCID iD: 0000-0003-1544-3560

MD, PhD

Russian Federation, Moscow

K. V. Lugovkina

Helmholtz National Medical Research Center of Eye Diseases

Email: ksushalyg@mail.ru
ORCID iD: 0000-0002-3531-3846

MD, PhD

Russian Federation, Moscow

A. N. Bedretdinov

Helmholtz National Medical Research Center of Eye Diseases

Email: anbedretdinov@gmail.com
ORCID iD: 0000-0002-2947-1143

MD, PhD

Russian Federation, Moscow

M. S. Zajtsev

Helmholtz National Medical Research Center of Eye Diseases

Email: zaicev1549@yandex.ru
ORCID iD: 0000-0002-4135-1128

MD, Junior Researcher

Russian Federation, Moscow

K. A. Ramazanova

Helmholtz National Medical Research Center of Eye Diseases

Email: ramazanova-k@yandex.ru
ORCID iD: 0000-0002-2635-4291

MD, PhD

Russian Federation, Moscow

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