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Yes, heat can affect eye vision. Exposure to excessive heat can lead to various vision-related issues, including blurred vision, dry eyes, and eye strain. Heat can also exacerbate existing eye conditions like dry eye and conjunctivitis.

Here's a more detailed explanation:

Blurred Vision:

Heat exhaustion and heatstroke can cause blurred vision, double vision, or difficulty focusing due to dehydration and the body's response to overheating, according to Specsavers.

Dry Eyes:

High temperatures can cause the tear film on the eye to evaporate faster, leading to dry eyes, irritation, and blurred vision, says The Eye Foundation.

Eye Strain:

• Sustained exposure to extreme heat, especially with poor eye protection, can cause eye strain, leading to headaches, blurry vision, and difficulty concentrating.

• Exacerbation of Existing Conditions:

  Heat can worsen pre-existing conditions like dry eye, conjunctivitis, and sensitivity to light, notes Dr Agarwals Eye Hospital.

• Corneal Sensitivity:

  Heat can increase the sensitivity of the cornea (the clear outer layer of the eye), making it more prone to irritation and discomfort.

• Heat Distortion:

  In extreme heat, layers of air with varying temperatures can distort light and affect how we perceive distance and shapes, explains Great Big Photography World.

• Uhtoff's Phenomenon:

  For people with Multiple Sclerosis, increased body temperature due to heat can temporarily worsen vision, but this effect is usually temporary reports Specsavers.

• Conjunctivitis:

  Heat and humidity can increase the prevalence of conjunctivitis (pink eye), which is a contagious eye infection.

To protect your eyes from heat:

• Stay hydrated: Drink plenty of fluids to prevent dehydration.

  Wear sunglasses: Protect your eyes from harmful UV rays and bright light with UV-protective sunglasses, recommends eye-q india.

• Use artificial tears: If you experience dry eyes, use lubricating eye drops to keep your eyes moist.

  Take breaks: If working or reading in hot conditions, take regular breaks to rest your eyes.

• Consider a hat: Wear a hat with a wide brim to provide extra shade and reduce sun exposure.

• Seek shade: Limit your time in direct sunlight, especially during peak hours.

• Consult a doctor: If you experience persistent or severe vision problems, consult an eye doctor