Which lense will provide a better protection for my eyes from the sun.

If I test 5 different types of sunglasses (Blue-blockers lenses, polarized lenses, mirror-coated lenses, gradient lenses, and photo-chromic lenses) in a box with an uv light detector, then the mirror-coated lenses would gives the best protection of ultraviolet radiation to the eyes.

• UV Light Detector[Beads]

• Blue-blockers lenses

• polarized lenses

• mirror-coated lenses

• gradient lenses

• photo-chromic lenses

• Empty shoe size box

• Masking tape

• Scissors

1. Gather Materials

2.Cut holes in the shoebox that exactly outline the shape of the sunglass lenses.

3.Place the sunglass lenses over the opening in the box. Make sure sunlight can only enter the box through the lens, seal any cracks and openings with masking tape

4.Place the UV detector (beads) inside and seal the box with tape.

5.Place the box in direct sunlight. Wait for about 10 to 15 minutes.

6..Open the box, observe and record the color intensity of the beads inside the detector. If the beads remain white, then the sunglasses are blocking harmful ultraviolet rays.

7..Remove the UV-Detector from the box.

8.Place the detector in an area where it will not receive sunlight until the beads turn back to white again.

9.Once again place the detector in the box, covering the opening with a different pair of sunglass lens.

10.Place the box in direct sunlight. Wait for about 10 to 15 minutes, observe and record the color intensity of the beads inside the detector.

11.This same procedure should be repeated with all of the sunglass pairs that will be used in this project. Make sure that the box is completely sealed and that the time of sunlight exposure is consistent.

13.Calculate the average UV reduction (if any) for each pair of sunglasses.

14.Record the data in a table Use the terms "White," "Light blue," "Medium blue," or "Intense or dark blue" when recording the UV-bead color intensity.

15.Repeat all steps for a total of 3 trials

Independent Variable- The different types of Sunglasses’ lenses

Dependent Variable- The amount of sunlight blocked by each sunglasses

Constants- Sun ,box, the environment, the length of the test

Which lenses will provide a better protection for my eyes from the sun? My hypothesis was If I test 5 different types of sunglasses (Blue-blockers lenses, polarized lenses, mirror-coated lenses, gradient lenses, and photo-chromic lenses) in a box with an UV light detector, then the mirror-coated lenses would give the best protection of ultraviolet radiation to the eyes. I base my hypothesis on my idea that mirror coated lenses were better because they reflected the sunlight preventing the UV light of penetrating the lenses. The result was that this hypothesis was wrong .My result was that all of the glasses were good for your eyes .

The purpose of my project is to see how different type of lenses protect your eyes better from the harmful UV rays of the sun. UV-A and UV-B rays from the sun can cause short-and long-term damage to your eyes and UV-C radiation is absorbed by the ozone layer. Long-term exposure to even small amounts of UV radiation can increase your risk of cataract or macular degeneration. UV exposure can also cause tissue elevations on the surface of your eye. My problem statement is which lenses will provide a better protection for my eyes from the sun.

My hypothesis was If I test 5 different types of sunglasses (Blue-blockers lenses, polarized lenses, mirror-coated lenses, gradient lenses, and photo-chromic lenses) in a box with an UV light detector, then the mirror-coated lenses would give the best protection of ultraviolet radiation to the eyes, it turned out to be wrong. After putting all the sunglasses in a box with UV light beads in the sun for ten minutes the beads didn’t change color. All the lenses didn’t let the UV rays pass.

The procedure was to cut holes in the lenses on a box, put the beads, and then the lenses into the box, go outside, and leave it for 10 minutes to see if it changes color. If it's white it is ok, but if it is not they are bad. The data I collected was that all the lenses were good. All of them were white,None of them changed color.

My major finding was that none of the beads changed colors,they all stayed white under the lenses. It is because all of the lenses are protected from UV rays. All the lenses are good for your eyes.

You can use this in a day-to-day life because now I know that using sunglasses are good for protecting your eyes.This experiment can be improved by seeing if without the box it is going to work. I will also improve how the beads would stay stil using tape to fix the beads to the lenses.

You can use this in a day-to-day life because now I know that using sunglasses are good for protecting your eyes This experiment can be improved by seeing if without the box it is going to work. I will also improve how the beads would stay still. By using tape to fix the beads to the lenses.

Calhoun,Mike.“Which type of Sunglasses are best for the sun” ,Education.com,April 2017

Which Type of Sunglass Lenses Gives the Best Sun Protection? | Science project

Sighni ,Rishi .”How to Choose the Best Sunglasses for Your Eye Health”,health.clevelandclinc.org 19 Jun.2019

https://health.clevelandclinic.org/how-to-choose-the-best-sunglasses-for-your-eye-health/

Edson ,Michea,”What are the Best Sunglasses?”Naturaleyecare.com,February 17https://www.naturaleyecare.com/blog/best-sunglasses-eye-wear/

ACKNOWLEDGEMENTS