Station six
(5 minutes allowed)
A patient with a known history of stable and medically controlled right glaucoma shows deterioration of his visual field despite normal intraocular pressure as measured with a Goldman tonometer. He had had a right LASIK performed 9 months earlier. Suggest two possible reasons for the deterioration in relation to the LASIK procedure.

How may corneal astigmatism affect the intraocular pressure measurement with a Goldman tonometer ?



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