OEBC Written Exam Practice Questions - OEBC Optometry Licensing Exam - Written Component (Canada) Exam

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During a routine eye exam, you perform goldmann applanation tonometry on a patient. If the corneal thickness of the patient is significantly thicker than the average population value (e.g., 610 microns), how does this affect the intraocular pressure (IOP) reading?

The measured IOP reading will be artificially higher than the true IOP. The measured IOP reading will be artificially lower than the true IOP. The measured IOP reading will remain completely unaffected. The tonometer mires will fail to align due to excessive corneal rigidity.

Correct Answer:

The measured IOP reading will be artificially higher than the true IOP.

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