Of course this is not the eye of TheEye of Sauron, or GreatEye, but the eye of the Bamboo Pit Viper.
Make sure you check out more information about this and other snakes over at: www.hongkongsnakeid.com and at
Active at night and occasionally roosting in bushes during the day. The Bamboo Viper is an ambush predator that will wait in a single position ready to strike. They are a viper and have relatively long retractable fangs and will bite readily at anything that comes within range. Generally not prone to give chase but will hold their ground if they feel cornered. Not actively aggressive but will not hesitate to bite. A bite from a Bamboo Viper should be considered very serious and medical attention should be sought immediately. Although not known to be deadly serious damage can occur from a bite even if treated and complications can always arise. (Click here if the video block does not load: https://youtu.be/DqQ7WdrlzXo)