Contact Lens Slit Lamp ?????????? Help :)

[Visionz]

I have an exam on the slit lamp tommorow and i need help on 1 of the illuminations. Specular Reflection i find it really hard to do since i am learning it on myself, i don't know what to look for in the patients eye, do you look at the edge of the limbus, iris, pupil, i have no clue, all i know is what angle and what intensity of light and that the light has to reflect back at an 90 degree angle. If anybody knows, please help.


This might be an basic question but i am just learning the keratometer, first class today, when you are moving the horizontal and vertical drums, do you move them at the same time???? When you are correcting the mires do you go clockwise with the drum or does it depend whether you have to go up or down.

[chip anderson]

Slit-Lamp: Find a woman to practice on. It's very very near to learn this or look at your own eye with a slit lamp.

Keratometer should take all of 45 min to learn.
1) Set eye piece.
2) Find main circle an align with cross.
3) Align axis with + mire.
4) While maintaining black cross in center of main circle, adjust distance so that you have only 3 circles with no superimposition.
5) Superimpose lighted + mires (not black cross) , then superimpose - mires.
6) Read radius and axis drums.
7) For a somewhat more accurate reading. Take horizontal with + mire first, then rotate keratometer 90 degrees and take this measurement with + mire. You will find that the true axis(s) are not always 90 degrees opposed.