Growth of the Internal and External Eye in Term and Preterm Infants

Isenberg, Sherwin J.; Neumann, Doron; Cheong, Pauline Y.Y.; Ling, Yvonne; McCall, Laurie C.; Ziffer, Anne J.

doi:10.1016/s0161-6420(95)30950-5

Cited by 48 publications

(35 citation statements)

References 11 publications

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“…At term, the anterior chamber depth averages 2.05 mm, with a range of 1.8-2.4 mm (19) . Isenberg et al (20) demonstrated that the mean axial length was 16.2 mm, the anterior chamber depth was 2.0 mm, lens thickness was 3.8 mm, and vitreous chamber depth was 10.5 mm for term newborns. Globe size and axial length undergo dramatic changes during infancy.…”

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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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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“…Most ultrasonographic and postmortem autopsy studies have described a linear pattern of fetal eye and eye structure growth. [5][6][7][8][9][10][11][12][13] A few authors have suggested that exponential models of growth better suit the fetal eye, including the curve model by Jeanty et al, 17 which seem to be used most by obstetricians. 16,17 Many other studies in the literature were fitted to a linear growth curve, including another fetal MR imaging study.…”

Section: Discussionmentioning

confidence: 99%

“…Most of the literature on fetal eye growth, based on autopsy, prenatal sonography, and fetal MR imaging measurements, has suggested a linear growth curve. [5][6][7][8][9][10][11][12][13][14][15] Others have suggested an exponential growth pattern. [16][17][18] Also, Denis et al 19 in 1998 described a quadratic growth pattern on the basis of autopsy measurements.…”

mentioning

confidence: 99%

In Utero Eye Development Documented by Fetal MR Imaging

Paquette¹,

Jackson²,

Tavaré³

et al. 2009

AJNR Am J Neuroradiol

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“…Eye growth is most rapid between the eighth and the fourteenth fetal week [174]. In utero, the sagittal length is about 12 mm at 6 months gestation, 14.4 mm at 7 months gestation, and 16.8 mm at 8 months gestation [170,175].…”

Section: Eye Growth and The Expansion Of The Peripheral Retinamentioning

confidence: 99%