Vision And Perception

No. Detecting that something is present and identifying what it is involve different perceptual demands. Recognition can be influenced by factors such as viewing distance, contrast, orientation, scene context, exposure time, and the visual characteristics that distinguish the target from surrounding information. Object-recognition research can therefore be relevant when identification, rather than simple detection, is disputed.

Visual processing has limited capacity, so attention helps prioritize selected locations and objects. Target conspicuity, expectations, scene context, competing information, and the task a person is performing can influence how attention is allocated. An expert may consider those factors when evaluating how the viewing conditions could have affected visual attention and perception in a particular setting.

A claim involving reduced visual acuity, eye disease, optic-nerve injury, or another clinical cause of impaired vision may require ophthalmology, optometry, or neuro-ophthalmology expertise. Vision and perception expertise is better suited to questions about how available visual information is detected, attended to, searched, interpreted, or recognized than to diagnosing the medical cause of impaired sight.