Certified Ophthalmic Technician (COT) Practice Test 2025 - Free COT Practice Questions and Study Guide

The average peripheral visual field limit for a 3 mm white target on a 330-degree radius is associated with certain standard measurements in ophthalmology. The data suggests that for a target of this size and under typical circumstances, peripheral vision extends approximately 95 degrees outward and 75 degrees downward.

This measurement accounts for the physiological capabilities of the human eye and the average thresholds of visual perception in the peripheral field. The limits are established through clinical testing and can vary somewhat among individuals, yet the values provided in the correct answer reflect averages that are routinely observed in the population when assessing visual fields with a target of this specification.

Other choices do not fit within the generally accepted or established norms for peripheral visual field limits under similar testing conditions, pinpointing that they do not align as closely with the recognized data outlined in visual field assessment protocols. Thus, the choice that specifies 95 degrees outward and 75 degrees downward accurately aligns with this documentation, making it the correct selection in understanding peripheral vision capacity.