What is the purpose of the trial frame reraction?
To determine refractive status when phoropter is unavailable
To comfirm/modify phoropter based refraction results
What five things are utilized in trial fream refraction?
Trial frame Trial lens sets Retinoscopy racks JCC Fixation targets
What can you adjut to make it properly fit?
Temple length Frame height Leveling Pantoscopic tilt PD
Why is temple length adjustment important?
To minimize vertex ddistance
In which cell is the spherical lens placed?
Closest to the patient
Why is direct assessment important?
To adjust the BVA for room allowance
Final subjective input from the pt
What and where is direct assessment?
Illustrates the final BVA and various options under natural viewing coditions like out a window or down a long hall