Log 2

Question 1

A patient new to your office wears no correction and can read only the 20/50 line .this patient is able to read the 20/20 line when a pinhole test is preformed . What is the most likely reason for the patients reduced v/a

Answer 1

Refractive error

Question 2

What are the steps for TFBUT

Answer 2

• Place patient at the slit lamp
• Instill fluoresce in in the patience eyes and ask them to blink
• Ask them to hold eye open
• scan the cornea with a 2-3 mm wide cobalt blue light and low magnification
• count from. The time of the last blink the seconds it takes to show the dark spots or streaks
• if the patient blinks before 10seconds have them start over
• repeat the measurement and take the average

Question 3

What is the minion normal value of a TFBUT

Answer 3

10-15 seconds

Question 4

What is considered the “gold standard “ for the evaluation of the patients with dry eye

Answer 4

Osmomerty

Question 5

If the upper lid position is at superior limbus what design should be used to fit a RGP?

Answer 5

Interpalpebtal fit

Question 6

Papebral fissure height in relation to the lens size affects what?

Answer 6

Determined of the RGP got will be interpalpebral or lid attached

Question 7

What is the total duration of an unconscious spontaneous blink

Answer 7

250 -300 msec

Question 8

Five mins after instillation of the schirmers strip how much moisture will collect on the filter paper if the patient has normal tear flow?

Answer 8

10-15mm