Wavefront Aberrometer for Ophthalmology – Case History 21

wavefront aberrometerMarket
Ophthalmology

Client Type
Established medical device OEM (Alcon Surgical)

Unmet Need
Non-contact, optical wavefront device to measure the refractive error of the human eye to enable an enlarged treatment zone for LASIK surgery.

Approach
Redesign a previous generation device to improve optical performance, electro-mechanical actuation, and ergonomics.

Product Features
A laser is focused onto the retina, and an optical wavefront emanates from the spot and passes out through the lens and cornea of the eye. The topology of the transmitted wavefront is measured using a microlens array and area detector (Hartmann-Shack sensor). The device measures both low-and higher-order refractive aberrations more accurately than any other instrument.

This data is transmitted to a LASIK machine, which sculps the cornea to unprecedented levels of accuracy. The system enables a larger treatment zone of 8mm diameter, which reduces or eliminates glare and “starring” experienced by LASIK patients during night vision. Users also report that up to 90% of their patients achieve “super-vision”, or better than 20-20 acuity.

Areas of Expertise Provided by OTI

  • Optical design and engineering
  • Industrial design and ergonomics
  • Mechanical engineering, including liquid resin cast part design and vendor sourcing
  • Development of custom fabrication and assembly methods
  • Complete FDA-compliant documentation set, including all drawings
  • Prototyping, verification testing and transfer to manufacturing

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