TONOMETRY & IOP Exam Questions with Complete Answers.
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Module
TONOMETRY & IOP
Institution
TONOMETRY & IOP
TONOMETRY & IOP Exam Questions with Complete
Answers.
Intraocular pressure - Correct Answers ● Determined by aqueous humor
production and outflow .
● Must be maintained at a level not harmful to ocular tissue.
Aqueous production - Correct Answers Produced by the ciliary processes of
th...
TONOMETRY & IOP Exam Questions with Complete
Answers.
Intraocular pressure - Correct Answers ● Determined by aqueous humor
production and outflow .
● Must be maintained at a level not harmful to ocular tissue.
Aqueous production - Correct Answers Produced by the ciliary processes of
the ciliary body
Aqueous production: Mechanisms - Correct Answers ○ Active secretion -
accounts for 80-90% of aqueous production; energy dependent; NOT IOP
dependent
○ Ultrafiltration - driven by hydrostatic pressure; fluid moves from high pressure
area to low pressure area
○ Diffusion - molecules move from area of high concentration to area of low
concentration; aqueous has
↓macromolecules while blood plasma has ↑macromolecules; may cause a small
amount of aqueous production
Outflow of aqueous mostly produced by? - Correct Answers active secretion
(80-90%)
Ultrafiltration:
____ eye pressure (IOP) = ____ of a gradient = ____ aqueous produced -
Correct Answers higher
less
less
4 steps of aqueous flow - Correct Answers 1. Formed in ciliary process
2. Flows into posterior chamber
3. Through lens-iris diaphragm
4. Into anterior chamber (AC)
,*aqueous flows up from warm (posterior AC) down to peripheral AC and it
cools. This aqueous mostly outflows with ____ outflow - Correct Answers
trabecular
Trabecular Meshwork acts like ______. As aqueous goes through this filter,
______ are filtered out;
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