What are common signs of increased intraocular pressure?

Increased intraocular pressure, often associated with conditions such as glaucoma, can manifest in various physical symptoms. The correct answer reflects signs that are closely related to the body's response to elevated pressure within the eye. Pain is a primary symptom, as the increased pressure can induce discomfort and even acute pain in severe cases. Restlessness can occur as patients may feel anxious or uneasy due to the discomfort or fear of potential vision loss, while an increased pulse rate can be a physiological response to pain and anxiety.

The other choices list symptoms that are more associated with different ocular conditions. For instance, symptoms like itching, redness, and discharge are indicative of allergic reactions or infections, while swelling, floaters, and halos around lights can be experienced in various eye conditions but are not as directly related to increased intraocular pressure as pain, restlessness, and an increased pulse rate are. Thus, understanding the correct symptoms of increased intraocular pressure is crucial in recognizing and managing potential ocular emergencies effectively.