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Why does body temperature affect the eye?

body temperature affect the eye

Why does body temperature affect the eye? 

Body temperature is of vital importance to all biological functions, as the rate of metabolic processes increases with increasing temperature, but if the temperature rises beyond a certain threshold, protein in nature are spoiled and may not work properly and this may eventually lead to death The lens proteins of the eye are vulnerable to changes in temperature, and the decrease in lens temperature leads to the formation of cold cataracts, which disappear when the temperature becomes normal.

Cold cataract formation is observed only in some species, not including humans and is associated with the formation of structural proteins of the lens, where a slightly increased temperature above the physiological level of 37.0 °C irreversibly increases light scattering from lens proteins due to protein aggregation and denaturation .

The human body receives sunlight through the skin and eyes, and although there are benefits to exposure to sunlight, including the formation of vitamin D in the skin and the formation of vision in the eyes, it has harmful effects, the most serious of which are skin cancer and clouding of the eye lens, and this is the result of prolonged exposure to the sun. Corneal temperature of a maximum of 36.5°C to 37.0°C at ambient temperatures between 32.0°C and 34.5°C.

The effect of body temperature on the eye

If there is a causal relationship between elevated eye temperature, cataracts and presbyopia , the incidence of these eye diseases is expected to increase with global warming, and the strong association between corneal temperature and core body temperature suggests that recurrent infections could also be considered a factor. Risk for age-related lens disorders.

Corneal temperature was closely related to basal body temperature. In rats and humans, corneal temperature seemed to stabilize at 36.5°C to 37.0°C despite a continuous increase in core body temperature. Similarly, a plateau of temperature was also found. The cornea in humans increased when the ambient temperature increased, but this plateau occurred at lower corneal temperatures of 33 °C to 35 °C.

Changes in core body temperature had a significant effect on corneal temperature. For example, a corneal temperature increased by 2°C when core temperature increased by 0.4°C, while an ambient temperature increased by 20°C, from 2°C. C to 22 °C, was required to increase the corneal temperature by 3 °C.

Elevated eye temperature is a risk factor for lens disorders such as presbyopia and cataracts Corneal temperature measurements are considered indirect measurements of lens temperature because direct measurements require procedures Internal eye temperature measurements have been made and show that there is a gradient inside the eye in temperature Heat from a cold cornea to a warm retina and that lens temperature is a combination of corneal and retinal temperatures.

eye temperature

Although the corneal temperature never exceeded the core body temperature, but unexpectedly it was found that the corneal temperature stabilized when the ambient temperature and core body temperature were raised at 33°C to 35°C and 36°C to 37°C. C respectively. Others found a corneal temperature of 36 °C at an ambient temperature of 40 °C supporting our plateau observations.

This may indicate that the eye has thermal sensors that regulate corneal temperature, although we did not find evidence of such sensors in the literature. However, the thermoregulation of the cornea may be self-regulating to some extent because increasing the ambient temperature will increase the cooling of the cornea by accelerating the evaporation of the tear film. Changing the blink rate also affects the corneal temperature. Eye diseases and ambient temperature are more important than ever. Interestingly, an implication of our data is that the effect of global warming on the prevalence of eye diseases will be worse for those living in colder climates that are getting warmer than for those living in hotter climates that are getting hotter. 

Eye care tips during the change of season

Many people know that eye pain occurs at any time during the year, not just from the monsoons , so it is advisable to follow these tips:

  • Only wear sunglasses marked “100% UV protection” outdoors.
  • After coming from outside during monsoon, don't forget to wash your eyes with cold water.
  • Keep your contact lenses in closed containers, and don't forget to clean the containers from time to time.
  • During the summer, if you feel very tired or dry, use a cool eye mask to get some relief.
  • Do not look directly at the sun.

Tips to avoid eye diseases in the summer

There are several tips that reduce the chances of eye diseases that increase in the summer, the most important of which are the following:

  1. Avoid direct eye exposure to ultraviolet rays and wear high-efficiency sunglasses.
  2. Avoid sharing personal items such as towels and bedding, which can transmit infection from one person to another.
  3. Pay attention to eye hygiene by cleaning it well with running water after exposure to dust.
  4. Refrain from sitting in front of the screen for a long time to avoid increasing dryness in the eye.
  5. The house must be kept clean and dust that may irritate the eye membranes must be removed.
  6. Refrain from sharing cosmetics.
  7. Clean hands carefully with soap and water.
  8. When traveling outside, always wear clothing that provides full UV protection.
  9. Wear suitable goggles when swimming.
  10. Try using clean, fresh disposable wipes.
  11. Beware of leaving the house in dusty weather.
  12. Visit an ophthalmologist when you have any problem so that it does not get worse and has a long-term effect.
  13. Avoid rubbing your eyes so as not to increase the sensitivity.
  14. The drug should not be used without consulting a specialist doctor.