Program overview
Developed by a practicing optometrist, this interactive simulator provides students with a platform to test and improve their skill of subjective refraction.
A note of dedication
This project is dedicated to my lecturers and the clinical mentors who have influenced my career in optometry. Their commitment to teaching and clinical excellence has provided the inspiration for this platform. Whilst their names are too many to list, their influence is present in every calculation this program makes.
In the spirit of those who have influenced me, may this tool serve you as well as those who have served me.
Display tip
This program is ideally suited for desktop users; however, adaptations have been made for laptop and phone users. Please select the option below that matches the device you are using. Mobile users should enable auto-rotate and rotate their phone sideways for the best layout. Desktop users should leave both options below unselected. Browser zoom can also be adjusted for further ease of use.
Choose your mode
Select how you would like to use the simulator.
Choose your clinical case level
Additional settings
RIGHT EYE
LEFT EYE
Additional settings
Patient voice-over accent
Choose No voice to keep patient responses text-only. British and American voice options are included for better compatibility across desktop and mobile devices, and the simulator will automatically choose the closest installed voice for the selected accent.
Reminder: if cyl is present, first use the red/minus JCC meridian to find the rough axis, then add a minus cyl lens
User reminder: Present the flipper, then wait for the patient response.
RE: 0.00 / 0.00 x 0
LE: 0.00 / 0.00 x 0
SPHERE
Lens 1
0.00
CYLINDER
0.00
AXIS
180°
JCC axis mode: drag the slider or type the cyl axis manually above.
Refining the Sphere (HIC Results)
Routine checklist
Monocular sphere endpoint
Duochrome / max plus check
JCC axis refinement
JCC power refinement
Recheck sphere after cyl
Binocular balance / HIC
Final VA and Rx
On-screen help
User reminder: Present Choice 1, then flip to Choice 2.
Demonstration note
in real life, the Humphriss immediate contrast (HIC) does not make the chart appear doubled. The split view is only shown here to help demonstrate the concept.