Welcome to        
OpticalCourse.com
Offering Free Training Courses
For Eye Care Professionals

By Opticians For Change

Point To Ponder

"Just as a Dentist cannot practice dentistry without direct Patient contact, the
Optician cannot effectively dispense without tactile contact with the Patient.
An unskilled eyewear merchant routinely hands over prescription glasses
with no hands-on assessment, nor the appropriate ‘touch-and-feel’ required
to custom fit the eyewear. Hands-on-the-Patient Opticians however, determine
for themselves by sense of touch how the frame feels in lieu of asking the Patient."

QUICK 12 QUIZ ANSWERS

Determine the amount of horizontal decentration for the following.

1. "A" measurement = 54   DBL = 16   PD = 62
Answer: 4 mm in each eye

2. "A" measurement = 42   DBL = 14   PD = 50
Answer: 3 mm in each eye

3. "A" measurement = 50   DBL = 16   PD = 66
Answer: 0

4. "A" measurement = 58   DBL = 22   PD = 64
Answer: 8 mm in each eye

Determine the "theoretical" minimum blank size for the following.

5. "A" measurement = 58   DBL = 18   PD = 68   ED = 60
Answer: 68 mm

6. "A" measurement = 52   DBL = 20   PD = 60   ED = 54
Answer: 66 mm

7. "A" measurement = 56   DBL = 16   PD = 64   ED = 59
Answer: 67 mm

8. "A" measurement = 48   DBL = 14   PD = 50   ED = 50
Answer: 62 mm

Calculate the vertical decentration of a bifocal segment.

9. "B" Measurement = 52   Seg height = 23
Answer: 3 mm below

10. "B" Measurement = 48   Seg height = 24
Answer: on line, i.e., no decentration

11. "B" Measurement = 50   Seg height = 28
Answer: 3 mm above

12. "B" Measurement = 46   Seg height = 19
Answer: 4 mm below

Back to QUICK-12 QUIZ

50 QUESTION TEST IS NEXT
TEST YOUR KNOWLEDGE
IT'S FREE