2. CL II - Nomenclature & Verification of CLs

Question 1

Define the following terms:

BOZR: ...
BOZD: ...
BPZR: ...
BPZD: ...
TD: ...
FOZR: ...
FOZD: ...
BVP: ...
CT: ...
ET: ...

Answer 1

Define the following terms:

BOZR: back optic zone radius
BOZD: back optic zone diameter
BPZR: back peripheral zone radius
BPZD: back peripheral zone diameter
TD: total diameter
FOZR: front optic zone radius
FOZD: front optic zone diameter
BVP: back vertex power
CT: centre thickness
ET: edge thickness

Question 2

Define alternate terms for these terms:

BOZR: ...
BOZD: ...
BPZR: ...
BPZD: ...
TD: ...

Answer 2

Define alternate terms for these terms:

BOZR: base curve (BC)
BOZD: optic
BPZR: peripheral curve radius (PCR)
BPZD: peripheral curve width (PCW)
TD: lens diameter (LD)

Question 3

What is the relationship between curvature and radius of curvature?

Answer 3

A longer radius of curvature and a lower curvature means a flatter curve.
A shorter radius of curvature and a higher curvature means a steeper curve.

Question 4

How do we inspect the following lens qualities:

Surface quality:
* ...

Edge quality:
* ...
* ...
* ...

Both:
* ...
* ...
* ...
* ...

Answer 4

How do we inspect the following lens qualities:

Surface quality:
* radiuscope/keratometer

Edge quality:
* feel
* slit lamp
* simple inspection

Both:
* slit lamp
* projection magnifier
* hand magnifier
* high powered trial lens

Question 5

How do we specify spherical RGP lenses?

Method 1
... .../.../... ... ... [...] ... [...] ... ... ...

Method 2
...

Answer 5

How do we specify spherical RGP lenses?

Method 1
eye BOZR/TD/BVP BOZD 1st BPR [1st BPZD] 2nd BPR [2nd BPZD] tint material engraving

Method 2
Same as method 1, except 1st BPR, 1st BPZD, 2nd BPR, and 2nd BPZD are specified by how much flatter the periphery needs to be

Question 6

How do we specify toric RGP lenses?

... .../.../.../.../... ... ... [...] ... [...] ... ... ...

...

Answer 6

How do we specify toric RGP lenses?

eye 1st BOZR/2nd BOZR/TD/1st BVP/2nd BVP BOZD 1st BPR1/BPR2 [1st BPZD] 2nd BPR1/BPR2 [2nd BPZD] tint material engraving

Same as spherical but have to specify both axes' BOZR, BVP, and BPRs

Question 7

How do we specify soft CLs?

... .../.../... ... ...
Additional information: ..., ...

Answer 7

How do we specify soft CLs?

eye BOZR/TD/BVP lens name company name
Additional information: supply, solution