Week 2 - Quiz Review Flashcards
What is the corneal astigmatism for these K readings? 41.75/44.25@090
2.50D (difference between the K readings)
What is the corneal astigmatism for these K readings? 47.00/44.00@090
3.00D (difference between the K readings)
What is the corneal astigmatism for these K readings?
43.50/44.75@090
1.25D(difference between the K readings)
What is the corneal astigmatism for these K readings?
45.00/46.75@090
1.75D(difference between the K readings)
What is the corneal astigmatism for these K readings?
40.25/42.25@090
2.00D(difference between the K readings)
What does SOAP stand for?
subjective
objective
assessment
plan
What part of the eye does the keratometer measure?
Corneal apex
Name the 5 direct slit lamp illuminations.
Diffuse
Specular Reflection
Parrallelpiped
Optic Section
Conical Beam
A patient tells you they have allergies. What cateogory of SOAP does this fall under?
Subjective
Documenting the reasoning behind your findings, what categories of SOAP does this fall under?
Assessment
What is another name for a slit lamp?
Biomicroscope
What is the method of illumination for Parallelpiped?
Direct
If the K reading is 40.00 (flat) and you want to fit as flat as possible. What base curve would be ideal from the two listed below? 8.3mm or 8.6mm
8.6mm
With the use of the slit lamp a practitioner is able to detect cataracts. T/F
TRUE
Which illumination is observed with the naked eye to see corneal clouding?
Sclerotic Scatter
You provided your px with an educational pamplet on proper contact lens cleaning regimes. What categories of SOAP does this fall under?
Plan
When performing a FBUT evaluation with flurorescein what filter must be used?
Cobalt blue filter
Is sclerotic scatter used to detect polymegathism?
No
Name 4 objective tests used in a contact lens fitting.
VA
Keratometry
TBUT
Slit lamp
Observations
Contact lens evaluation
A slit lamp is used to assess the different layers of the cornea. T/F
TRUE
The slit lamp assessment can be performed on the anterior and posterior segment of the eye. T/F
TRUE
What is the first step when using a keratometer?
Wash Hands
Diffuse slit lamp illumination allows CLF to get an overview of the cornea. T/F
TRUE
What are the 3 indirect illuminations?
Indirect Proximal
Retro - illumination
Sclerotic scatter
What is the first assessment done during a contact lens fit?
VA - visual acuity
Which illumination is used to check aqueous flare?
Conical Beam
Identify the cornea as steep, medium or flat based on the K reading: 44.25/44.75 @090
Medium
A person with diabetes can or cannot be fitted with Contact Lenses?
Contact lenses are indicated so can be fitted
45.50/47.00@090 Is this with the rule or against the rule astigmatism?
With the rule -steepest K is in the vertical
What are the uses for a diffuse illumination? 5
-Overall view
-Corneal scarring, infiltrates, neo-vascularizarion
-Edema of epithelium
-Lids, lashes, caruncle, scleral vessels
-meibomina glands
What are the uses for parallelepiped illumination? 6
- broad view of anterior and posterior surfaces
-anterior surface irregularities - stroma
-endothelium/ straie formations
-scars, abrasions, folds in descemet’s membrane
-Contact lens fit
What are the uses for a Optic Section illumination? 6
-Corneal Layers
-Contact lens fit
-depth of foreign bodies
-crystalline lens
-anterior chamber and its angle
-aqueous flare
What are the uses for a Conical Beam illumination? 4
-aqueous flare
-red blood cells
-white blood cells
-debris floating in anterior chamber
What are the uses for Specular Reflection illumination? 4
-mucus secretion
-precorneal fluid
-tear layer assessment
-contact lens fit
What are the uses for Indirect Proximal Illumination? 4
-study iris
-vesiculation
-view of outer rim of the iris
-ghost vessels
What are the uses for Retro Illumination? 5
-scars
-pigments
-neo-vascularization
-edema of epithelium
-corneal precipates
What are the uses for Sclerotic Scatter? 4
-Corneal clouding observed by the naked eye
-contact lens in place
-corneal scars
-macula, deposits or pigmented area
