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Pupil & Gaze Trainer — True-Scale, Clear but Bounded Nystagmus
ℹ️ Info
Penlight Pupil Size Chart (True Scale)
Reference:
Pinpoint ≈
1–2 mm
• Normal (room light) ≈
3–4 mm
• Dilated ≥
6 mm
Eyes
Right side Pupil:
—
(ratio
—
)
💡 Penlight — Right side
Left side Pupil:
—
(ratio
—
)
💡 Penlight — Left side
Tracking (follow examiner’s finger):
Left ⇄ Right (auto-centers on release)
Record findings (sides are the patient’s)
PERL (Pupils Equal and Reactive to Light)
— choose —
Yes
No
Right side — Size
— choose —
Pinpoint
Normal
Dilated
Right side — Reaction
— choose —
Normal
Sluggish
Non-reactive
Right side — Tracking
— choose —
Normal tracking
Movement limited toward the patient’s left
Movement limited toward the patient’s right
Both eyes held to the patient’s left
Both eyes held to the patient’s right
Nystagmus (visible small rapid shaking)
Eyes do not move together / one lags
Left side — Size
— choose —
Pinpoint
Normal
Dilated
Left side — Reaction
— choose —
Normal
Sluggish
Non-reactive
Left side — Tracking
— choose —
Normal tracking
Movement limited toward the patient’s left
Movement limited toward the patient’s right
Both eyes held to the patient’s left
Both eyes held to the patient’s right
Nystagmus (visible small rapid shaking)
Eyes do not move together / one lags
Grade Findings
New Random Case
About
“Right side” and “Left side” are from the patient’s point of view. The right side appears on the left of your screen.
The chart and the live pupils use the same geometry. A pupil that reads “6.0 mm” will match the 6 mm chart disc on any screen size.
The tracking slider recenters itself when you let go, like returning your finger to the middle.
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