Robjona Toska
Investigating the Impact of a Simulated Gaze-Contingent Central Scotoma on Eye Movements Using Augmented Reality.
Rel. Federica Marcolin, Alessia Celeghin, Francesca Nonis. Politecnico di Torino, Corso di laurea magistrale in Ingegneria Biomedica, 2025
Abstract
Central Vision Loss (CVL) due to conditions such as Age-related Macular Degeneration (AMD) can significantly impair daily activities by disrupting the ability to process fine visual details. When the foveal region is compromised, individuals rely on compensatory mechanisms such as peripheral vision strategies to navigate and interact with their surroundings. Augmented Reality Head-Mounted Displays (AR-HMDs) offer a promising tool for investigating visual adaptation by simulating central vision deficits in controlled experimental settings. This study explores the impact of a gaze-contingent central scotoma simulation on visual strategies using the Microsoft HoloLens 2. The scotoma was implemented in Unity as an opaque white region that dynamically followed the participant's gaze, effectively blocking central visual input.
A cohort of normally sighted participants performed two visually demanding tasks, reading and visual search, under two conditions: with and without a simulated central scotoma
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