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Ophthalmic Technician

Category - Keratometry, Tonometry, and Refractometry

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What should the intraocular pressure be to diagnose hypotony?

Always zero mm of Hg
<8 mm of Hg
8 - 21 mm of Hg
>21 mm of Hg

Explanation

Answer: B - <8 mm of Hg is considered to be hypotony. Because there are no medicines to raise the intraocular pressure, one needs to be careful in interpretation of low intraocular pressure. Irreversible loss of vision can result from < 4 mm of HG.

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