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Related Concept Videos

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Diabetic Retinopathy

DefinitionDiabetic retinopathy is a microvascular complication of diabetes affecting the retinal blood vessels.Risk FactorsDiabetic retinopathy is present in almost all individuals with type 1 diabetes and more than 60% of those with type 2 diabetes after two decades of disease.The risk increases with poor glycemic control, hypertension, dyslipidemia, smoking, pregnancy, and puberty.Although cataracts and glaucoma are also more frequent in people with diabetes, retinopathy remains the leading...
Photoreceptors and Visual Pathways01:22

Photoreceptors and Visual Pathways

At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category, whereas...
Glaucoma: Overview01:25

Glaucoma: Overview

Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...
Focusing of Light in the Eye01:16

Focusing of Light in the Eye

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...
Accessory Structures of the Eye01:17

Accessory Structures of the Eye

Optical perception, or vision, is an extraordinary sense dependent on converting light signals received via the ocular organs. These organs, known as eyes, are securely positioned within the bony cavities of the skull, called orbits. The orbits serve a dual purpose: a protective shield for the ocular globes and a stable attachment point for the soft ocular tissues. The eye's external protective mechanisms include the eyelids, which are edged with lashes that act as a barrier against foreign...
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Angle Closure Glaucoma: Treatment

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Related Experiment Video

Updated: Jul 11, 2026

Monitoring Dynamic Growth of Retinal Vessels in Oxygen-Induced Retinopathy Mouse Model
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Published on: April 2, 2021

Ophthalmological problems associated with preterm birth.

A R O'Connor1, C M Wilson, A R Fielder

  • 1Division of Orthoptics, University of Liverpool, Liverpool, UK.

Eye (London, England)
|October 5, 2007
PubMed
Summary
This summary is machine-generated.

Preterm infants face increased risks of serious eye conditions like retinopathy of prematurity and vision impairment. These visual deficits impact overall development, highlighting the lifelong challenges of premature birth.

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Transcutaneous Microcirculatory Imaging in Preterm Neonates
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Last Updated: Jul 11, 2026

Monitoring Dynamic Growth of Retinal Vessels in Oxygen-Induced Retinopathy Mouse Model
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Published on: April 2, 2021

Modeling Encephalopathy of Prematurity Using Prenatal Hypoxia-ischemia with Intra-amniotic Lipopolysaccharide in Rats
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Transcutaneous Microcirculatory Imaging in Preterm Neonates
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Transcutaneous Microcirculatory Imaging in Preterm Neonates

Published on: December 31, 2015

Area of Science:

  • Ophthalmology
  • Neonatology
  • Developmental Pediatrics

Background:

  • Improved survival rates for preterm infants have increased the prevalence of long-term ophthalmic issues.
  • Preterm birth significantly impacts the developing ocular system, leading to diverse visual problems.
  • Retinopathy of prematurity is a major concern, potentially causing severe vision loss.

Purpose of the Study:

  • To review normal ocular development and its disruption in preterm infants.
  • To examine the incidence and visual consequences of various ophthalmic deficits in preterm populations.
  • To compare visual outcomes in preterm and term infants.

Main Methods:

  • Review of existing literature on ocular development and preterm-related ophthalmic conditions.
  • Analysis of studies comparing visual function in preterm versus term infants.
  • Discussion of causal and resultant factors in ophthalmic deficits.

Main Results:

  • Preterm infants exhibit higher rates of refractive errors, strabismus, and cerebral vision impairment.
  • These visual impairments significantly affect overall visual function and development.
  • Ophthalmic deficits in preterm infants are multifactorial, often with intertwined causes.

Conclusions:

  • Children born prematurely experience a higher incidence of all types of ophthalmic deficits.
  • The visual challenges faced by preterm infants have lasting impacts on their development.
  • Preterm infants require comprehensive, long-term ophthalmic care due to lifelong visual compromises.