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Related Experiment Videos

Ultrasonic fetal ophthalmology.

J C Birnholz

    Early Human Development
    |November 1, 1985
    PubMed
    Summary

    Ultrasonic imaging reveals detailed fetal eye structures and growth patterns during pregnancy. Ocular development is linked to cerebral development, with abnormal eye growth potentially indicating developmental delays.

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    Area of Science:

    • Fetal Medicine
    • Ophthalmology
    • Medical Imaging

    Background:

    • Understanding fetal eye development is crucial for assessing overall fetal well-being.
    • Previous studies suggest a correlation between ocular and cerebral development.
    • Advanced ultrasound technology allows for detailed visualization of fetal anatomy.

    Purpose of the Study:

    • To ultrasonically assess fetal eye development during the second and third trimesters.
    • To characterize the growth patterns of the fetal vitreous humor.
    • To reaffirm the association between ocular growth and cerebral development.

    Main Methods:

    • Utilized a large aperture, dynamically focused ultrasound imaging system.
    • Examined 157 normal fetal cases across the second and third trimesters.
    • Measured and analyzed fetal ocular structures, including globe, lens, iris, pupil, cornea, and vitreous diameter.

    Main Results:

    • Detailed visualization of fetal ocular and extraocular structures achieved.
    • Observed hyaloid artery regression by 25 weeks gestational age.
    • Identified specific periods of vitreous diameter acceleration (12-20, 28-32 weeks, near term) and deceleration.

    Conclusions:

    • High-resolution ultrasound effectively visualizes fetal ocular structures.
    • Fetal vitreous humor exhibits distinct growth spurts during gestation.
    • Findings support the link between restricted ocular growth and delayed cerebral development.

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