Johns Hopkins
Engineering Design Day

Tuesday, May 4, 2021

The Johns Hopkins Engineering community is creating a better future, translating theoretical knowledge into real-world solutions.


Join us on Tuesday, May 4 for a virtual celebration showcasing student innovation and creativity at Hopkins Engineering annual Design Day!

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Design Day Projects

Temperature control of ocular environment for improved cataract surgery outcomes.

Team: BME Design Team: Catarax

Program: Biomedical Engineering

Cataracts are the clouding of the ocular lens and is the leading cause of blindness worldwide. In the USA alone, 24.4 million patients suffer from cataracts, a figure that is expected to grow to 43 million people by 2050. Cataracts have no intermediate, non-invasive solutions, so surgery is a must for patients to recover their vision. Cataract surgery is one of the most commonly performed surgical procedures and cataract surgeons need a method to better monitor and control ocular temperature to reduce surgical time and rates of corneal edema. Evidence suggests colder intraocular temperature may lead to impaired enzymatic function, which results in post operative complications such as corneal edema. Extra post-operative visits for patients with corneal edema amounts to $1.5 million per year. Due to the lump-sum reimbursement practices, these extra visits are not reimbursed and take time away from seeing new patients. Furthermore, temperature changes can also slow down different steps in the surgery, which incurs additional costs at the expense of the provider. Cutting surgical time would reduce the total provider cost for each procedure, and allow higher procedure volume per day. To mitigate temperature-related complications in cataract surgery, Design Team 1 is creating a system to control the temperature of the ocular environment.This allows for the surgeon to speed up specific steps in the procedure and a warmer ocular environment reduces the risk of corneal edema.


  • Project Mentor: Dr. Allen Eghrari, M.D., M.P.H.
  • Project Mentor: Dr. Keith Walter, M.D.
  • Faculty Mentor: Shababa Matin, M.S.E.
  • Dr. Shameema Sikder, M.D.
  • Teaching Assistant: Jordan Shuff

Team Members

  • Rupsa Acharya
  • Andres Aguirre
  • Sarah Khan
  • James Pitingolo
  • Rishima Mukherjee
  • Minyoung (Stella) Park
  • Gwyneth Alexander
  • Erick Rocher
  • Eli Levenshus

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