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Suggest how your irises help to protect the retinas of your eyes from the damage by bright light

Suggest how your irises help to protect the retinas of your eyes from the damage by bright light

Grade:12

1 Answers

Apoorva Arora IIT Roorkee
askIITians Faculty 181 Points
9 years ago
The eye has a couple of external features, which it uses to help to protect itself from harm. One of these is the eyelid, which protects the front part of the eye. The eyelid opens and shuts several times a minute which helps to keep the eye clean and moist. The eyelids have good reflex control, which also helps to prevent the eye from damage. For example, they shut automatically when an object comes too close to the eye or when you move from dim light into bright light. Eyelashes are also important and are joined to the eyelids. They help to keep the eyes clean and free from dirt.
Another method of protection for the eye is through tears. These are secreted from the lacrimal gland, which is above the outer corner of each eye. The tears help to keep the eye moist and to wash away dirt, germs and any other foreign particles for example, dust.
Thanks and Regards
Apoorva Arora
IIT Roorkee
askIITians Faculty

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