To appear at ACM SIGGRAPH 2010

Ilustration: Tiago Allen

Figure 1: Can a person look at a portable display, click on a few buttons and recover his refractive condition? Our optometry solution combines inexpensive optical elements and interactive software components to create a new portable and inexpensive optometry device.

Abstract

We introduce an interactive, portable, and inexpensive solution for estimating refractive errors in the human eye. While expensive optical devices for automatic estimation of refractive correction exist, our goal is to greatly simplify the mechanism by putting the human subject in the loop. Our solution is based on a high-resolution programmable display and combines inexpensive optical elements, interactive GUI, and computational reconstruction. The key idea is to interface a lenticular view-dependent display with the human eye at close range – a few millimeters apart. Via this platform, we create a new range of interactivity that is extremely sensitive to parameters of the human eye, such as the refractive errors, focal range, focusing speed, lens opacity, etc. We propose several simple optical setups, verify their accuracy, precision, and validate them in a user study.

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Paper

• High Resolution (7MB)
• Low Resolution (600K)

Citation: Vitor F. Pamplona, Ankit Mohan, Manuel M. Oliveira, Ramesh Raskar. NETRA: Interactive Display for Estimating Refractive Errors and Focal Range. Proc. of SIGGRAPH 2010 (ACM Transactions on Graphics 29, 4), 2010.

Bibtex:

@article{Pamplona_et_al_2010,
  author = {Vitor F. Pamplona and Ankit Mohan and Manuel M. Oliveira and Ramesh Raskar},
  title = {NETRA: Interactive Display for Estimating Refractive Errors and Focal Range },
  journal = {ACM Transactions on Graphics (proceedings of ACM SIGGRAPH)},
  year = {2010},
  volume = {29},
  number = {4},
}

Videos

MIT Media Lab LabCast: Credit, Paula Aguilera and Jonathan Williams

Pictures

• Group Picture

NETRA team: Ankit Mohan, Manuel M. Oliveira Neto, Vitor Pamplona and Ramesh Raskar at the MIT Media Lab.
Photo: Jonathan Williams

 

• Individual Pictures

Vitor Pamplona demonstrates NETRA	Vitor Pamplona demonstrates NETRA
Manuel M. Oliveira demonstrates NETRA	Manuel and Vitor
Ramesh Raskar demonstrates NETRA	Ramesh and Ankit
Ankit Mohan demonstrates NETRA	Ankit Mohan demonstrates NETRA

• IDEAS Competition

Vitor Pamplona, Margaret McKenna, Ankit Mohan and Chika Ekeji. Photo by Xun (Helen) Hou	Vitor Pamplona, Margaret McKenna, Ankit Mohan and Chika Ekeji. Photo by Xun (Helen) Hou
Margaret McKenna, Chika Ekeji, Ankit Mohan and Vitor Pamplona. Photo by Xun (Helen) Hou	Photo by Xun (Helen) Hou

• Prototypes in action

Photo: Michal Massey

• User study and Experimental Validation

• One of our team members visiting an Optometrist

• Initial Exploration