Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Focusing of Light in the Eye01:16

Focusing of Light in the Eye

7.4K
Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
7.4K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Arthropod Bite and Churg-Strauss Syndrome.

Journal of investigational allergology & clinical immunology·2025
Same author

The effect of retinopathy of prematurity on visual acuity, refraction, biometric values, retinal and choroidal thickness in school-aged children.

BMC ophthalmology·2025
Same author

Occupational Asthma and Rhinoconjunctivitis due to Soybean in a Bakery Worker.

Journal of investigational allergology & clinical immunology·2024
Same author

Do not ignore mouth breathing syndrome: respiratory functions are affected in early childhood.

Rhinology·2024
Same author

Clinical spectrum of patients diagnosed with childhood mastocytosis: a retrospective single center experience.

European annals of allergy and clinical immunology·2024
Same author

Adrenalin use in Kounis syndrome: a well-unknown entity.

European annals of allergy and clinical immunology·2024

Related Experiment Video

Updated: Mar 30, 2026

Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter
05:14

Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter

Published on: September 16, 2025

748

Refractive errors and refractive development in premature infants.

O Ozdemir1, Z Ozen Tunay1, D Erginturk Acar1

  • 1Ophthalmology Department, Zekai Tahir Burak Women's Health Education and Research Hospital, Ankara, Turkey.

Journal Francais D'Ophtalmologie
|November 7, 2015
PubMed
Summary
This summary is machine-generated.

Refractive errors in premature infants are linked to gestational age and birth weight. Lower birth weight and earlier gestational age correlate with lower spherical equivalent in preterm babies.

Keywords:
HypermétropieHyperopiaMyopiaMyopieRefractionRefractive statusRetinopathy of prematurityRetinoscopyRéfractionRétinopathie du prématuréRétinoscopieÉtat de réfraction

More Related Videos

Subjective Refraction Test Using a Smartphone for Vision Screening
05:36

Subjective Refraction Test Using a Smartphone for Vision Screening

Published on: October 18, 2024

2.0K
How to Obtain Reliable Visual Event-related Potentials in Newborns
07:39

How to Obtain Reliable Visual Event-related Potentials in Newborns

Published on: October 24, 2019

6.9K

Related Experiment Videos

Last Updated: Mar 30, 2026

Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter
05:14

Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter

Published on: September 16, 2025

748
Subjective Refraction Test Using a Smartphone for Vision Screening
05:36

Subjective Refraction Test Using a Smartphone for Vision Screening

Published on: October 18, 2024

2.0K
How to Obtain Reliable Visual Event-related Potentials in Newborns
07:39

How to Obtain Reliable Visual Event-related Potentials in Newborns

Published on: October 24, 2019

6.9K

Area of Science:

  • Ophthalmology
  • Neonatology
  • Developmental Pediatrics

Background:

  • Refractive errors are common in premature infants.
  • Understanding refractive development is crucial for early intervention.

Purpose of the Study:

  • To investigate refractive errors and their development in premature infants.
  • To analyze factors influencing refractive development in preterm neonates.

Main Methods:

  • Longitudinal examination of premature infants (28-58 weeks postmenstrual age) in a retinopathy of prematurity screening program.
  • Cycloplegic retinoscopy using 1% tropicamide to assess refractive status.
  • Recording birth weight, gestational age, gender, and retinopathy of prematurity (ROP) disease status.

Main Results:

  • Spherical equivalent significantly correlated with postmenstrual age (r=0.512, P<0.01).
  • Gestational age (r(2)=0.30) and birth weight (r(2)=0.22) significantly impacted refractive error development.
  • Lower birth weight and earlier gestational age were associated with lower spherical equivalent.

Conclusions:

  • Low gestational age and low birth weight in preterm infants are linked to lower spherical equivalent.
  • Spherical equivalent shows a significant positive correlation with increasing postmenstrual age.
  • Astigmatism did not correlate with postmenstrual age, gestational age, or birth weight in this cohort.