Analysis of the horizontal corneal diameter, central corneal thickness, and axial length in premature infants

Özdemir, Özdemir; Tunay, Zühal Özen; Petriçli, İkbal Seza; Acar, Damla Ergintürk; Acar, Uğur; Erol, Muhammet Kazım

doi:10.5935/0004-2749.20140058

Cited by 8 publications

(5 citation statements)

References 20 publications

(20 reference statements)

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“…We previously investigated the axial length of 374 eyes in 187 premature infants at 40 weeks of mean postmenstrual age and reported that there were no differences in axial length between infants with and without ROP (19). In the present study we achieved similar results, except for infants between 34 and 37 weeks postmenstrual age.…”

Section: Discussionsupporting

confidence: 83%

Growth of biometric components and development of refractive errors in premature infants with or without retinopathy of prematurity

Özdemir¹,

Tunay²,

Acar³

2016

Turk J Med Sci

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Section: Discussionsupporting

confidence: 83%

Growth of biometric components and development of refractive errors in premature infants with or without retinopathy of prematurity

Özdemir¹,

Tunay²,

Acar³

2016

Turk J Med Sci

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“…Studies on corneal development are also inconsistent when reporting how long is needed for corneas to mature ( 13 ). Ozdemir et al ( 14 ) believed that the horizontal corneal diameter of normal newborns was 10–10.5mm, which increased by 0.15–1.0mm at the end of one year; this study's results support this. Nanda ( 15 ) believed that the corneal diameter of infants 6–12 months old could approach the normal adult diameter of 11.80mm.…”

Section: Discussionsupporting

confidence: 79%

Changes to intraocular pressure and its correlation with corneal diameter in infants aged from 0 to 36 months

Wang

Meng

et al. 2022

Front. Pediatr.

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ObjectiveThis study examines the distribution and development of intraocular pressure (IOP) in infants aged from 0 to 36 months and analyzes its correlation with corneal diameter.MethodsThe study used a retrospective case analysis methodology. Healthy infants treated in the ophthalmology department of Hebei Children's Hospital from December 2012 to December 2020 were included in the study. Among these infants, 385 had their IOP measured, and 432 had their corneal diameters measured. Furthermore, information such as birth history, growth and development, IOP, and corneal diameter were collected. Their IOPs were measured with an iCare portable rebound tonometer when the child was awake and calm, and the corneal diameter was measured with a Castroviejo caliper under chloral hydrate sedation. The infants were divided into five groups according to age, and SPSS statistical software was used to analyze, compare, and correlate IOP and corneal diameter variations.ResultsThe mean IOP values of 0–1 month, 1–6 months, 6–12 months, 12–24 months and 24–36 months groups were 7.42 ± 1.92, 9.10 ± 2.85, 12.00 ± 3.15, 13.72 ± 3.09, and 15.14 ± 2.67 mmHg, respectively. The differences in IOP of the 0–1 month old infants and the 1–6 months old infants with the other three groups were statistically significant; the difference in IOP between the 6–12 months group and the 24–36 months group was statistically significant. In the studied groups, the horizontal corneal diameters were 9.78 ± 0.14, 10.50 ± 0.29, 10.86 ± 0.23, 11.38 ± 0.07, and 11.72 ± 0.04 mm, respectively, and the vertical diameters of the cornea were 9.28 ± 0.26, 10.07 ± 0.18, 10.28 ± 0.14, 10.56 ± 0.24, and 10.85 ± 0.03 mm, respectively. The differences in the vertical and horizontal diameters of the cornea among the groups were statistically significant.ConclusionInfants' IOP and corneal diameter positively correlate with age, and they peak in the first 12 months.

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“…These authors obtained a mean axial length between 16.37 and 16.66 mm, anterior chamber depth between 2.14 and 2.26, posterior segment length between 10.18 and 10.47, and lens thickness between 3.93 and 4.04 mm. Similarly, we have previously reported the mean anterior chamber depth as 2.1 ± 0.4 mm, lens thickness as 4.1 ± 0.7 mm, vitreous length as 10.3 ± 1.5 mm, and axial length as 16.4 ± 1.3 mm in 138 eyes of 69 premature infants with ROP (27) . In the present study, the anterior chamber depth, vitreous length, and axial length were slightly greater in boys than girls.…”

Section: Discussionmentioning

confidence: 99%

The relationship of birth weight, gestational age, and postmenstrual age with ocular biometry parameters in premature infants

Özdemir¹,

Tunay²,

Acar³

et al. 2015

Arquivos Brasileiros De Oftalmologia

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Preterm birth is a significant public health concern, as it is associated with a high risk of infant mortality, various morbidities in both the neonatal period and later age, and significant socio-economic difficulties (1,2) . Prematurely born children are disadvantaged in terms of perinatal mortality and long-term growth (3)(4)(5) , and they have low birth weight and shorter eyes as compared with full-term children (6,7) . ABSTRACTPurpose: To analyze ocular biometry parameters and evaluate their relationship with gestational age, birth weight, and postmenstrual age in prematurely born infants. Methods:The right eyes of 361 premature infants born before the 36th gestational week were evaluated. Birth weight, gestational week, and gender were recorded. An A-scan Biometer was used for obtaining axial measurements, including anterior chamber depth, lens thickness, vitreous length, and total axial length. Results: Gestational age and birth weight values ranged from 23 to 36 weeks and from 560 to 2,670 g, respectively. The mean gestational age and birth weight were 30.8 ± 2.8 weeks and 1,497.9 ± 483.6 g, respectively. During the first examination (4-5 weeks of postnatal age), birth weight and gestational age of the infants correlated significantly and positively with lens thickness, vitreous length, and axial length (r>0.5, p<0.001), but not with anterior chamber depth (r<0.5). Increased vitreous and axial lengths correlated significantly with increasing postmenstrual age of the infants (r=0.669, p<0.001; r=0.845, p<0.001, respectively). Conclusions: Lens thickness, vitreous length, and axial length, but not anterior chamber depth, were significantly correlated with birth weight and gestational age. All four parameters increased with increasing postmenstrual age, with higher correlations for vitreous and axial lengths than for anterior chamber depth and lens thickness. It was concluded that axial elongation resulted primarily from increasing posterior chamber length. At present, ultrasound and optical biometry (partial coherence laser interferometry) are used to measure intraocular distances. Ho wever, eye measurements in newborns are only possible using ul tra sonic methods. Ultrasound biometry, commonly referred to as A-scan and B-scan, is utilized for diagnostic testing and biometric mea surements (8) . A-scan ultrasonography provides a one-dimensional measurement of length in the axial plane. Additionally, it facilitates the monitoring The relationship of birth weight, gestational age, and postmenstrual age with ocular biometry parameters in premature infants A relação entre o peso ao nascer, idade gestacional e idade pós-menstrual com a biometria ocular em bebês prematuros Keywords

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Analysis of the horizontal corneal diameter, central corneal thickness, and axial length in premature infants

Cited by 8 publications

References 20 publications

Growth of biometric components and development of refractive errors in premature infants with or without retinopathy of prematurity

Growth of biometric components and development of refractive errors in premature infants with or without retinopathy of prematurity

Changes to intraocular pressure and its correlation with corneal diameter in infants aged from 0 to 36 months

The relationship of birth weight, gestational age, and postmenstrual age with ocular biometry parameters in premature infants

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