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Optik
Human Centered Design Project
Product Design

Redesignging the contacts lens case

Reimagined by Kyle Richards, Christy Nachtigall, Annette Hong and myself.

Through extensive observational methods, user testing and rapid prototyping, Optik helps users change their non-disposable contacts in due time with fresh contact solution daily. This was completed under the course DSGN 308: Human Centered Product Design.



I. Problem

"I just change them out when they hurt. They're expensive so I max out my use of them."
"I'm never bothered to clean it until it looks dirty. It doesn't seem worth being organized for."
"Why bother replacing the solution when it looks clean from the night before?"
- Anonymous users

Many non-disposable contact wearers are guilty of not taking care of their contacts including wearing them long past their expiry date and not using fresh solution. Consequently, users risk corneal stratches and eye infections due to improper and unhygienic lens care.

Our goal was to redesign the standard plastic contacts case that would help users keep up with timely replacements and good hygiene care of their contacts.


II. Brainstorming and User Testing


83% of non-disposable contact lens users surveyed stated that they often forget to change their lenses on time. Along with an extremely detailed research into the market competition and patented designs, it was evident that they was a huge white space for improvement.

User Requirements

  • Cheap
  • Intuitive
  • Easy implementation and conforms to current daily routine
  • Long lifetime

Detailed specifications can be found in the final deck and report.



Many different concepts were created from this brainstorm, and through rapid prototyping, we were able to quickly test them. Three designs are shown below.


Eventually, the design that satisfied all the specifications and had the most positive feedback from users was the final design we ended up with.

III. Design Development
  • Design for Manufacturing (DFA) considerations while designing
  • Pump / Push button size tests for saline solution
  • Hole size tests for automatic refill
  • CAD mold model designs to 3D printing
  • Vacuum molding for rapid prototyping
  • Extensive material selection research



IV. Final product
Pre-measured saline solution

The saline solution tank holds a pre-measured amount of liquid for the duration of the contacts, i.e. biweekly prescriptions will have 14 days worth of solution.

Refilling solution

Connected solution tank and case adds convenience to replace solution, and if users forget to refill, the case is designed to utilize natural water flow and solution will replace automatically overnight.

Optimized cost and convenience

Users will never have to buy solution, contacts and extra cases separately. All three will be replaced every prescription period. Manufacturers will save on supply logistics and ensure users are buying contacts in a timely manner.

Manufacturing and Environmental Considerations

The case will be polymer blow molded with PET, easing manufacturing costs and allowing it to be recycled with waterbottles. Each case is stackable, making packaging much more compact.


Chicago, IL, USA
+1 847 420 5460
j.elizabethoh@gmail.com