Unit 2 Flashcards

1
Q

Assess Patient Suitability

A
  • Expectations
  • Hobbies
  • Work Environment
  • Medical History
  • Ocular History
  • Wearing History
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2
Q
  • Patient history is critical in determining???
A

◦ Whether a patient is suitable for contact lens wear
◦ To aid in selection
◦ To inform on management

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3
Q

Expectations

A

◦ Motivation for contact lenses
How he/she intends to use the lenses
◦ Expected wear time
◦ Replacement frequencies
◦ Expected visual outcome; most important for presbyopic patients
◦ Fitting process
Time involved
◦ Costs
Fitting, lenses

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4
Q
  • Hobbies
A

◦ Discuss any hobbies or sports during which the patient intends to wear the lenses
Soft, hybrid, and scleral rigid lenses are less likely to become dislodged
Swimming is not recommended
–If necessary, a daily disposable lens with immediate replacement
◦ Eye protection, goggles, or safety glasses are still required ◦

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5
Q
  • Work Environment
A

◦ Long-term computer use
◦ Dust and debris Esp. for RGPs
◦ Chemical fumes
◦ Safety glasses are still required

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6
Q
  • Medical History
A

◦ Conditions and medications can change tear chemistry
Allergies
Pregnancy, menopause
Thyroid
Hyperthyroid- eyes are protruding more
Hypothyroid
–Eyelid position
Autoimmune diseases
–Inflammation
Dermatological conditions (seborrheic dermatitis, atopic eczema, acne rosacea)
Patient’s own physical capabilities
Diabetes
–Prone to infection and poor healing
–Reduced corneal sensitivity

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7
Q

Medications

A

Antihistamines, decongestants
Acne medications
Diuretics
OCP, Hormone replacement therapies
Anti-anxiety/depressants
Beta blockers
Chemo

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8
Q
  • Ocular History
A

◦ Last eye exam
◦ Previous ocular surgery or trauma
Esp. refractive surgery
◦ History of ocular infection
◦ Visual acuity
◦ HVID
◦ Refraction
Astigmatism
High myopia
Presbyopia ◦ Keratometry
◦ Topograpy; a map of the cornea (any irregularities/steepness)
◦ Slit lamp; lids, lashes, conjunctiva etc..

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9
Q
  • Wearing History
A

◦ Satisfaction
◦ Current lens parameters
Brand / type of lens worn (beware of poor recall!)
◦ Wear schedule
Average daily wear time (hours per day, days per week)
Sleeping in lenses
◦ Replacement frequency
◦ Care regimen

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10
Q

Advantages of CL

A

-Field of view- plus vs minus lens characteristics
-Better for anisometropia- Different prescription in each eye; image size difference issue with glasses
-Stays in place, don’t have to keep adjusting
-improves your side vision because of how it fits perfectly in your eyes
-No glare
-Wider field of view (frames are no longer in field of vision)
-Sports
-Weather
-Irregular cornea
-Less convergence for hyperopes at near
-No prismatic effect

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11
Q

Disadvantage of CL

A

-Fitting time and adaptation
-Lens handling skills
-Risk of infection
-Outdoor or office environment
-Unable to current some BV (binocular vision) problems
-Greater convergence by myopes at near
-Expensive
-Limited UV protection and tints

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