Tonometry & IOP
Patient:Nakamura, SarahAge:51Case:calmSeed:37306
The Patient -- constructed
51 y/o -- complaint: Routine eye exam; no symptoms.
On the slit lamp before you touch the drum: Quiet white eye, clear cornea, round reactive pupil.
Sim Time09:00advances only when you choose to re-measure
Call the Range -- before the tonometer will measure

The applanation controls are dead until a range is called.

Goldmann Applanation -- turn the drum until the inner edges just touch
no fluorescein -- rings barely visible
drum10 mmHg

Instill fluorescein, then bring the drum up. The rings will tell you.

re-measure at
Free Moves
Log -- located facts
nothing yet
model & provenance

IOP follows a seeded diurnal curve -- a cosine with a morning peak, amplitude a few mmHg in ordinary eyes and larger in glaucomatous ones (Drance 1963, Liu et al. 1998). The mires' inner edges touch when the drum matches the eye's IOP at that sim time; excess fluorescein thickens the rings and reads a couple of millimetres high at the apparent endpoint; too little thins them and reads low. Corneal thickness is context: thin corneas read low and carry more risk, thick read high; no numeric correction is rendered because none is validated for individual eyes (AAO guidance) -- the cornea flips the classification, not the number (Doughty & Zaman 2000, CCTS). Constructed patients only. No timer exists. Simplified model for educational and research purposes -- not a clinical diagnostic tool.

MeasureInterpretRoutescope: measure, interpret, route -- no treatment verb