What is the term for a scotoma that is located immediately nasal or temporal to fixation?

The term for a scotoma that is located immediately nasal or temporal to fixation is "paracentral." This designation is used because "paracentral" refers to areas that are situated close to the central vision (the point of fixation) but not directly in the center. In this context, since the scotoma is located adjacent to the area of fixation, it falls under this classification.

When discussing vision and scotomas, it's important to understand their location in relation to the point of fixation. A paracentral scotoma affects the visual field near the center but not the central vision itself, which is typically the foveal area where visual acuity is highest. This allows the eye to retain some degree of visual function while still presenting challenges in viewing objects in that immediate vicinity.

The other terms reflect different locations and characteristics of scotomas: "centrally located" pertains to scotomas that are right at the center of vision, "peripheral" refers to scotomas located out towards the edges of the visual field, and "foveal" specifically relates to the area of highest acuity directly at the center of the visual field, thus differentiating it from the paracentral region.