What term describes generalized eye discomfort or fatigue of undetermined cause?

The term that describes generalized eye discomfort or fatigue of undetermined cause is asthenopia. This condition is commonly referred to as "eye strain" and can result from various factors, including prolonged screen time, inadequate lighting, or focusing on tasks for extended periods without breaks. Symptoms often include discomfort, blurred vision, headache, and a feeling of heaviness in the eyes.

The other terms listed refer to specific conditions. Anisocoria pertains to unequal pupil sizes, cataracts involve the clouding of the eye’s lens leading to vision impairment, and aniridia is a congenital condition characterized by the absence of the iris. Understanding asthenopia is important since it is frequently encountered in environments with extensive visual demands, particularly in settings with computer usage, which is common in many workplaces, including optical retail.