Which of the following is not a source of error in the applanation tonometry:
Tear film is required for accurate measurement , is not a source of error. Sources of error in tonometry: Inappropriate fluorescein pattern. Pressure on the globe. Central Corneal thickness. Corneal edema. Pulse pressure. Astigmatism. Incorrect calibration. Wide pulse pressure.
High Pressure on the globe
Tear film
Astigmatism
Wide pulse pressure
Glaucoma