AUgmented REality for the Visually Impaired - Part 1

Summary

The main objective of this study is to quantify vision parameters in subjects with concentric visual field constriction, and this in relation to the display on virtual reality goggles. More specifically:

* The maximum brightness value for visual comfort (THRESHOLD\_MAX)
* The minimum value of the perceptible light contrast in low light perceptible (THRESHOLD\_MIN)
* The speed of light change adaptation in the range \[THRESHOLD\_MAX-THRESHOLD\_MIN\] and \[THRESHOLD\_MIN-THRESHOLD\_MAX\].

Conditions

• Retinitis Pigmentosa
• Glaucoma

Interventions

PROCEDURE

Find the size of the visual field

For these tests, the subject is seated at a table, 1.5m from a wall. It features a computer keyboard. It projects an image on the wall, using to a video projector. An image moving towards a target (along 16 different trajectories) is used to evaluate the size of the visual field.

PROCEDURE

Effectiveness of brightness control

During this testing session, the investigators seek to evaluate the effectiveness of the algorithms used to control the brightness. The subject is in a room with four different computers. The subject is asked to identify the objects displayed on different computer monitors in the room: he/she must press a key on the keyboard when he/she detects an object and state aloud the nature of the object.

PROCEDURE

Performance of color correction

During this session, the investigators try to assess the performance for the color vision correction (saturation and hue). The subject, while wearing the virtual reality glasses + camera performs a test (twice) that requires matching colored dots (i.e. a Farnsworth test) under controlled light conditions.

DEVICE

Vuzix Wrap 1200DX virtural reality glasses

The other interventions are performed with the use of virtual reality glasses, specifically the Vuzix Wrap 1200DX. In case of technical difficulties, the latter can be swapped with the Oculus Rift model or another model. The associated webcameras are from Logitech, and the exact model used can vary and does not carry any importance for this research.

PROCEDURE

Find visual comfort threshold related to light intensity

In this testing session, the patient's visual comfort threshold related to light intensity will be determined. Test sessions are kept under 45 minutes. The subject is sitting in front of a keyboard and a computer screen. He/she is invited to recognize letters successively displayed in the center of the screen, this center is marked with a black cross. Each letter appearance is preceded by a beep. The subject must click on the "space" bar on the keyboard as soon as he/she recognizes the letter, then gives his/her answer orally.

Sponsors & Collaborators

• Centre Hospitalier Universitaire de Nīmes

  lead OTHER

Principal Investigators

• Isabelle Marc, PhD · Laboratoire LGI2P, Ecole Nationale Supérieure des Mines

• Luc Jeanjean, MD · Centre Hospitalier Universitaire de Nîmes

Study Design

Allocation

NA

Purpose

BASIC_SCIENCE

Masking

NONE

Model

SINGLE_GROUP

Eligibility

Min Age

18 Years

Sex

ALL

Healthy Volunteers

No

Timeline & Regulatory

Start

2016-05-31

Primary Completion

2017-04-20

Completion

2017-05-29

Countries

• France

Study Locations