Glaucoma

Damage to the optic nerve

• Visual Loss
• Progressive

https://glaucoma.org.au/

Path Integration

Ability to keep track of a position

• Vestibular system (Wallace et al., 2002)
• Sensory flow (optic-flow) (Wylie et al., 1999)
• Motor efference (Whishaw and Wallace, 2003)

Daga et al. (2017) -Wayfinding and Glaucoma

Optic Flow

The pattern of apparent motion of objects

• Relative motion between an observer and a scene

https://www.bi.mpg.de/opticflow

• 29 participants (15 control, 14 glaucoma)
• 12 different triangular paths (3 angle x 4 path length)
• Environment with/out optic flow (w OF //  w/o OF)
• 48 trials in total

1. Start from Point 0
2. Move to Point 1
3. Remember the position
4. Move to Point 2 (second waypoint)
5. Move to Point 3 (final waypoint)
6. Point the position to be remembered

Time Series Data

• Position of the Participant
• Heading Direction
• Time
• Group
• Optic Flow

Glaucoma

Control

Model Concerns

• Time to complete one trajectory is different across participants.
• Trajectory is similar but the way participants walk is different.
• Different trajectories
• Each trajectory consists of 4 trials for each participant

• Classification of participants using navigation data