Basic Contact Lens Exam 1 with all Correct & 100% Verified
Answers |Latest Version |Already Graded A+
1. What is a
Small peice of plastic fitted and worn on the front surface of the eye to
contact lens?
correct refractive error and enhance vision
2. What are
1. Cosmesis: some people do not like their appearance in glasses,
some reasons
to wear change in iris color, corneal scarring
contact 2. Sports/Recreation or Inconvenience of glasses: uncomfortable,
lenses? unable to wear, broken glasses, less field of view
3. Treatment of refractive error: anisometropia, progressive myopia
(orthokera-tology or corneal refractive therapy, reshapes cornea to
decrease myopia), High ametropia
4. Treatment of eye disease and disorders: ocular trauma
(bandage lenses pro-tects cornea while healing), environmentally induced
disorders (dry eye), corneal disease
5. Sometimes best option post-surgery: Post-PKP (corneal transplant
can cause irregular astigmatism), Post-refractive surgery (some patients
left with irregular astigmatism)
6. Pediatric use: high anisometropia (high likelihood of amblyopia),
congenital cataracts (aphasia), amblyopia (occluder contact lenses
alternative to patching)
3. Contact 1. Patient screening
lens exam 2. Preliminary examination and measurements
"order" 3. Trial lens fitting
4. Lens dispensing
5. After-care
-Good tear quality and quantity
4. Indications
-Spherical refractive error or low-moderate astigmatism
for soft
-Athletes
lenses
-Unable to adapt to rigid gas-permeable lenses (GPs)
-Occasional wear
-Cosmetic tints to change eye color
1/
39
, Basic Contact Lens Exam 1 with all Correct & 100% Verified
Answers |Latest Version |Already Graded A+
-Previous GP adherence
2/
39
, Basic Contact Lens Exam 1 with all Correct & 100% Verified
Answers |Latest Version |Already Graded A+
lenses.
5. Contraindic
a-tions for
Soft lenses
6. Types of
Contact
Lenses
7. For an "ide-
al" contact
lens fit, we
want the
lens to
the corneal
shape for rigid
lenses or
for soft
3/
39
, Basic Contact Lens Exam 1 with all Correct & 100% Verified
Answers |Latest Version |Already Graded A+
-Previous 3 and 9 o'clock lenses): HEMA = hydroxy-methylmethacrylate (larger than cornea)
staining with GP's -Soft plastic: plastic polymer and water, water allows for oxygen passage
-High motivation
GP = Parallel
-Inflammation or disease of In order for a rigid lens to parallel the corneal shape, it too must flatten in
the anterior segment periphery as well
-Poor hygiene Soft lenses = drape evenly
-Lack of motivation Soft lenses drape the globe so the curvature only needs to be grossly
-Chronic allergies and similar
antihistamines use
-Systemic diseases, which
complicate contact lens
wear
-Autoimmune
disease/immunocomprom
ised
-Poor tear quality and
quantity
-Irregular astigmatism
-Radial keratotomy
-Dry, dusty environments
-Giant Papillary Conjunctivitis
(GPC)
1. Rigid lenses
-Hard plastic: PMMA, no
oxygen transfer
-Gas permeable: acrylic,
fluorine, and silicone which
allows for oxygen transfer;
RGP materials can be used
for corneal lenses
2. Hydrophilic (soft
4/
39
Answers |Latest Version |Already Graded A+
1. What is a
Small peice of plastic fitted and worn on the front surface of the eye to
contact lens?
correct refractive error and enhance vision
2. What are
1. Cosmesis: some people do not like their appearance in glasses,
some reasons
to wear change in iris color, corneal scarring
contact 2. Sports/Recreation or Inconvenience of glasses: uncomfortable,
lenses? unable to wear, broken glasses, less field of view
3. Treatment of refractive error: anisometropia, progressive myopia
(orthokera-tology or corneal refractive therapy, reshapes cornea to
decrease myopia), High ametropia
4. Treatment of eye disease and disorders: ocular trauma
(bandage lenses pro-tects cornea while healing), environmentally induced
disorders (dry eye), corneal disease
5. Sometimes best option post-surgery: Post-PKP (corneal transplant
can cause irregular astigmatism), Post-refractive surgery (some patients
left with irregular astigmatism)
6. Pediatric use: high anisometropia (high likelihood of amblyopia),
congenital cataracts (aphasia), amblyopia (occluder contact lenses
alternative to patching)
3. Contact 1. Patient screening
lens exam 2. Preliminary examination and measurements
"order" 3. Trial lens fitting
4. Lens dispensing
5. After-care
-Good tear quality and quantity
4. Indications
-Spherical refractive error or low-moderate astigmatism
for soft
-Athletes
lenses
-Unable to adapt to rigid gas-permeable lenses (GPs)
-Occasional wear
-Cosmetic tints to change eye color
1/
39
, Basic Contact Lens Exam 1 with all Correct & 100% Verified
Answers |Latest Version |Already Graded A+
-Previous GP adherence
2/
39
, Basic Contact Lens Exam 1 with all Correct & 100% Verified
Answers |Latest Version |Already Graded A+
lenses.
5. Contraindic
a-tions for
Soft lenses
6. Types of
Contact
Lenses
7. For an "ide-
al" contact
lens fit, we
want the
lens to
the corneal
shape for rigid
lenses or
for soft
3/
39
, Basic Contact Lens Exam 1 with all Correct & 100% Verified
Answers |Latest Version |Already Graded A+
-Previous 3 and 9 o'clock lenses): HEMA = hydroxy-methylmethacrylate (larger than cornea)
staining with GP's -Soft plastic: plastic polymer and water, water allows for oxygen passage
-High motivation
GP = Parallel
-Inflammation or disease of In order for a rigid lens to parallel the corneal shape, it too must flatten in
the anterior segment periphery as well
-Poor hygiene Soft lenses = drape evenly
-Lack of motivation Soft lenses drape the globe so the curvature only needs to be grossly
-Chronic allergies and similar
antihistamines use
-Systemic diseases, which
complicate contact lens
wear
-Autoimmune
disease/immunocomprom
ised
-Poor tear quality and
quantity
-Irregular astigmatism
-Radial keratotomy
-Dry, dusty environments
-Giant Papillary Conjunctivitis
(GPC)
1. Rigid lenses
-Hard plastic: PMMA, no
oxygen transfer
-Gas permeable: acrylic,
fluorine, and silicone which
allows for oxygen transfer;
RGP materials can be used
for corneal lenses
2. Hydrophilic (soft
4/
39
