COT Contact Lens Review Questions With Complete Solutions
which of the following medications may affect successful contact lens wear?
Antihistamines
Which term refers to sensitivity to light
Photophobia
This following is an example of what type of astigmatism
K's 42.50F@ .50@90
Against-The-Rule Astigmatism
The Cornea receives nutrients from
Aqueous humor, Tears, Limbal blood vessels
The increased loss of ability of the crystalline lens to accommodate is called
Presbyopia
Which instrument can provide simultaneous information about the cornea, lids, conjunctiva, lashes,
contact lens surface and fit?
Slit lamp
,COT Contact Lens Review Questions With Complete Solutions
The classic model of the pre-corneal tear film is composed of three layers. They are:
lipid, aqueous, Mucin
Transpose the following rx into minus cylinder form
-4.50 + 1.25 X 94
-3.25 -1.25 X 4
The average pH value of the human tear is
7.4
If the manufacturer's guidelines suggest a minimum of 4 hours for disinfection, what would you suggest
to the patient?
A minimum of 4 hours is required
The main supply of oxygen to the corneal epithelium is derived from the
Tear film
, COT Contact Lens Review Questions With Complete Solutions
What is the term for the condition in which there is a loss of vision without any apparent disease to the
eye?
Amblyopia
Which auxiliary trial lens will extend the keratometer range to approximately 30.00 D?
-1.00D
Which step should be performed first when taking keratometer measurements
Focus the eyepeice
The following is an example of what type of astigmatism
K's 44.00@ .50 @ 90
Rx -3.00-2.50 x 180
lenticular astigmatism
Ocular signs of aging include:
Tear film Abnormalities, Reduced lid elasticity, lens opacities, loss of accommodation
which of the following medications may affect successful contact lens wear?
Antihistamines
Which term refers to sensitivity to light
Photophobia
This following is an example of what type of astigmatism
K's 42.50F@ .50@90
Against-The-Rule Astigmatism
The Cornea receives nutrients from
Aqueous humor, Tears, Limbal blood vessels
The increased loss of ability of the crystalline lens to accommodate is called
Presbyopia
Which instrument can provide simultaneous information about the cornea, lids, conjunctiva, lashes,
contact lens surface and fit?
Slit lamp
,COT Contact Lens Review Questions With Complete Solutions
The classic model of the pre-corneal tear film is composed of three layers. They are:
lipid, aqueous, Mucin
Transpose the following rx into minus cylinder form
-4.50 + 1.25 X 94
-3.25 -1.25 X 4
The average pH value of the human tear is
7.4
If the manufacturer's guidelines suggest a minimum of 4 hours for disinfection, what would you suggest
to the patient?
A minimum of 4 hours is required
The main supply of oxygen to the corneal epithelium is derived from the
Tear film
, COT Contact Lens Review Questions With Complete Solutions
What is the term for the condition in which there is a loss of vision without any apparent disease to the
eye?
Amblyopia
Which auxiliary trial lens will extend the keratometer range to approximately 30.00 D?
-1.00D
Which step should be performed first when taking keratometer measurements
Focus the eyepeice
The following is an example of what type of astigmatism
K's 44.00@ .50 @ 90
Rx -3.00-2.50 x 180
lenticular astigmatism
Ocular signs of aging include:
Tear film Abnormalities, Reduced lid elasticity, lens opacities, loss of accommodation
