Which type of agents can result in temporary blindness upon exposure?

Blister agents are known for causing severe skin damage and can also lead to temporary blindness upon exposure, particularly when they come into contact with the eyes. These agents work by causing chemical burns, and their effects can be devastating, leading to not only physical pain but also visual impairment.

For example, agents like mustard gas are classified as blister agents and can damage the cornea, leading to inflammation and temporary loss of vision. This effect can be particularly acute, depending on the duration and concentration of exposure to the agent.

While nerve agents are highly toxic and affect the nervous system, leading to various harmful effects, including possible eye twitching or other neural reactions, they do not specifically cause temporary blindness through chemical burn mechanisms. Blood agents interfere with the body's ability to utilize oxygen but do not have a direct impact on vision. Choking agents primarily target the respiratory system, causing asphyxiation and lung damage rather than affecting the eyes.