Certified Instrument Specialist (CIS) Practice Exam 2025 – The All-in-One Guide to Achieving Certification Success!

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What characterizes Toxic anterior segment syndrome (TASS)?

An infectious disease affecting the cardiovascular system

An inflammatory reaction caused by noninfectious substances

Toxic anterior segment syndrome (TASS) is characterized by an inflammatory reaction in the anterior segment of the eye, which occurs following surgery, particularly cataract surgery. This reaction is caused by noninfectious substances, such as chemical residues from surgical instruments, medications, or preservative agents used during the procedure. Unlike infections, TASS is identified by its rapid onset and specific symptomatology, which includes inflammation, corneal edema, and increased intraocular pressure.

This option correctly captures the essence of TASS by highlighting that the syndrome is not due to an infection but rather a response to irritants or toxic substances that have inadvertently entered the eye during a surgical procedure. This understanding is crucial for healthcare professionals to distinguish TASS from other potential complications that can arise after surgical interventions.

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Acute pain in the abdominal area post-surgery

An autoimmune response affecting the lungs

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