Objective
Duration
Team members
BENEFITS OF SPARC
No Electronics
Simple
working principle
Easy integration in daily routine
Easy to use
Affordable
Lightweight
HOW TO USE SPARC
STEP - l
Place the SPARC in one of the slot of the trial frame
STEP - ll
Align yourself to shine the slit light through each of the aperture
STEP - lll
When you see the red reflection through the aperture, you are at the right angle to conduct peripheral refraction
UNDERSTANDING THE CLINICAL USE CASE OF SPARC
Refraction is an examination that helps understand how the image is formed within the eye indicating its refractive error i.e. Myopia , Hyperopia or astigmatism.
CENTRAL REFRACTION
TOOLS REQUIRED
Retinoscope
Trial frames
+/-
Lenses
PROCEDURE
Patient
0’
Doctor
OUTCOME
HYPEROPIA
Moves along with the light
NORMAL
Glows entirely
MYOPIA
Moves against the light
PERPHERAL REFRACTION
EFFECTS OF MYOPIA
In the case of myopia, the eyeball elongates causing image formation before the retina
Elongation of the eyeball leads to varying refractive errors in the periphery of the retina
AIM
Peripheral refraction is done to understand refractive errors in the periphery of the retina
PROCEDURES
Patient
Doctor
Clinician moves 22’ nasal or temporal to the patient
Conduct refraction for the peripheral region of the eye
RELATIVE PERPHERAL HYPEROPIA
COMPARISION OF THE TWO READINGS
Central Refraction - MYOPIA (Moves against the light)
Peripheral Refraction - HYPEROPIA (Moves along with the light)
This confirms Relative Peripheral Hyperopia
Autorefractors
-It is an expensive device and private practitioners cannot afford it.
Peripheral retinoscopy
-Aligning to the accurate angle is cumbersome and requires experience to perform.
Head or Eye rotation
-The patient may not fixate on the right target.
- Eyeball can change the shape on rotation.
PERIPHERAL ANCILLARY REFRACTION COMPONENT (PARC)
PARC
PARC is an electronics based device to help conduct Peripheral Refraction using a retinoscope developed at L V Prasad Eye Institute that works with the use of sensors to detect the right angle and distance
HOW IT WORKS
It is an additional attachment on the trial frames
The retinoscope light enters through protruding tubes for the sensor to detect
It has three light settings to indicate on/off, distance and angle
WHY IT FAILS
The bulky form makes it top heavy and is prone to falling off the trial frame
The protruding tubes do not allow lens to be inserted inn the slots
Multiple light indication increases the cognitive load
DESIGN BRIEF
To create a guiding instrument that aids in the execution of peripheral refraction for myopia detection.
AIM
Clear angle indication
Affordable and Simple
Good user experience with Easy lens insert
WORKING PRINCIPLE
Initial concepts :
included reflection and dual mirror reflection as a retinoscope attachment and replacement of slots on the trial frame.
Retroreflection :
After testing and experimenting various options went forward with red retroreflective tape which reflects the light back in the same direction as the retinoscope providing a clear indication to the clinician to conduct peripheral refraction at the right angle.
BRANDING
Brand colors
Choice of a muted blue color palette
Vibrant without being overwhelming
Professional and trustworthy appearance to establish SPARC as a medical product.
Simplified Peripheral Ancillary Refraction Component
Typeface
Logo- Clash display
Body- Satoshi and Satoshi Bold
USER TESTING
User testing for the product SPARC that was done at the 4th IMARC (Indian Myopia Awareness and Research Conference) for user validation and feedback.
It is an annually held conference that brings together clinicians who specialize in myopia and play an important role in Indian myopia management. User testing was conducted targeting this niche set of audience to see the acceptability of the product and verify is working function.
-SPARC
-How it works
-How to use
Pre user testing survey
-Current practices
-Inconveniences faced
-Needs and requirements
User testing
-Observing user interaction
Post user testing survey
-User experience
-Feedback
