Related Experiment Video
Updated: Feb 12, 2026
03:20
Studying Chronic Exposure of Mice to Ultraviolet B Radiation
Published on: August 19, 2025
2.0K
Ultraviolet radiation oxidative stress affects eye health
Iliya V Ivanov1, Timo Mappes2, Patrick Schaupp2
1Institute for Ophthalmic Research, University of Tuebingen, Tuebingen, Germany.
Journal of Biophotonics
|April 1, 2018
Summary
Ultraviolet radiation (UVR) damages eye structures, increasing oxidative stress (OS) and leading to noncancerous eye diseases. Protecting eyes from UVR, especially in childhood, is crucial to prevent serious ocular pathologies.
Area of Science:
- Ophthalmology
- Environmental Health
- Cellular Biology
Background:
- Ultraviolet radiation (UVR) is a high-energy light source known to cause cellular damage, particularly in ocular structures.
- While not involved in vision, UVR exposure is linked to various noncancerous eye conditions and plays a role in cancer development.
- Oxidative stress (OS) is a key mechanism underlying UVR-induced ocular damage.
Purpose of the Study:
- To review current knowledge on UVR's role in oxidative stress (OS) concerning noncancerous eye diseases.
- To discuss OS signaling pathways and mechanisms in the aging eye.
- To highlight the vulnerability of children to UVR and emphasize protective measures.
Main Methods:
- Literature review of recent scientific knowledge on UVR, oxidative stress, and ocular pathologies.
- Discussion of cellular damage mechanisms and signaling pathways related to UVR exposure.
- Analysis of age-related differences in UVR susceptibility and protective strategies.
Main Results:
- Excessive UVR exposure significantly increases OS in eye tissues, contributing to conditions like corneal pathologies, cataract, glaucoma, and age-related macular degeneration.
- Children are particularly susceptible to UVR due to physiological factors, accumulating a significant portion of lifetime exposure before age 18.
- OS signaling pathways are implicated in the aging process of the eye and UVR-induced damage.
Conclusions:
- UVR is a significant risk factor for noncancerous ocular pathologies, primarily through the induction of oxidative stress.
- Early and consistent eye protection against UVR is essential, especially for children, to mitigate long-term eye damage.
- Public awareness initiatives are vital to inform about UVR hazards and promote protective behaviors.
Related Concept Videos
01:30Stress and Mental Health
964
Chronic stress profoundly affects mental health, significantly influencing mood, behavior, and overall quality of life. Research closely links chronic stress with mental health conditions such as depression, anxiety, and substance use disorders. Ongoing exposure to stress can lead to physiological and psychological changes, initiating a cycle of emotional distress and maladaptive coping mechanisms.
Individuals with depression often experience challenges in both their personal and professional...
Individuals with depression often experience challenges in both their personal and professional...
964
02:59Biological Effects of Radiation
18.1K
All radioactive nuclides emit high-energy particles or electromagnetic waves. When this radiation encounters living cells, it can cause heating, break chemical bonds, or ionize molecules. The most serious biological damage results when these radioactive emissions fragment or ionize molecules. For example, α and β particles emitted from nuclear decay reactions possess much higher energies than ordinary chemical bond energies. When these particles strike and penetrate matter, they...
18.1K
03:14Oxidation Numbers
43.1K
In redox reactions, the transfer of electrons occurs between reacting species. Electron transfer is described by a hypothetical number called the oxidation number (or oxidation state). It represents the effective charge of an atom or element, which is assigned using a set of rules.
43.1K
01:17Radiation: Applications
1.8K
The average temperature of Earth is the subject of much current discussion. Earth is in radiative contact with both the Sun and dark space; it receives almost all its energy from the radiation of the Sun and reflects some of it into outer space. Dark space is very cold, about 3 K, so Earth radiates energy into it. For instance, heat transfer occurs from soil and grasses, the rate of which can be so rapid that frost can occur on clear summer evenings, even in warm latitudes.
The average...
The average...
1.8K
01:15Pyruvate Oxidation
169.3K
After glycolysis, the charged pyruvate molecules enter the mitochondria via active transport and undergo three enzymatic reactions. These reactions ensure that pyruvate can enter the next metabolic pathway so that energy stored in the pyruvate molecules can be harnessed by the cells.
First, the enzyme pyruvate dehydrogenase removes the carboxyl group from pyruvate and releases it as carbon dioxide. The stripped molecule is then oxidized and releases electrons, which are then picked up by NAD+...
First, the enzyme pyruvate dehydrogenase removes the carboxyl group from pyruvate and releases it as carbon dioxide. The stripped molecule is then oxidized and releases electrons, which are then picked up by NAD+...
169.3K
01:02Ultraviolet and Visible (UV–Vis) Spectroscopy: Overview
6.7K
Ultraviolet–visible (UV–visible or UV–Vis) spectroscopy is an analytical technique that investigates the interaction between matter and UV–Vis light within the electromagnetic spectrum. This method is widely used for its versatility, simplicity, and relatively quick data acquisition, making it valuable for both qualitative and quantitative analysis. When UV–Vis radiation passes through a material, molecules absorb light depending on the energy required for...
6.7K