20,000,000 CL wearers in U.S.
4-5,000,000 New Wearers each year
4-5,000,000 D/C every year
Reasons for Contact Lenses
Medical History
Medications
Do You Plan to Stay in Area for 6 months (minimum)???
Contact Lens History
What is the Patient Wearing? Satisfaction? Symptoms?
Reason(s) for Changing
Beware of Shopper
CRA = refractive cyl – keratometric cyl
If refraction = -2.00 – 1.00 x 180 and
Keratometry = 42.00 @ 180; 42.25 @ 090
CRA = -1.00 – (-)0.25 = -0.75 x 180
0 = satin
1 = several papillae per mm
2 = papillae 0.5 – 1.0mm in size
3 = Giant Papillary Conjunctivitis (GPC), lens intolerance, discharge, with fluorescein, large papillae are observer near margin
•limbal vasculature
•staining
•opacities
•endothelium
Small < 5mm
Medium 5-7mm
Large >7mm
2. Benefits – RGPs Benefits – Hydrogels
Vision Initial Comfort
Ocular Health Ability to Inventory
Good Surface Wettability No Foreign Body Sensation
High Oxygen Transmission Variable Wear/Disposable
Correction of Astigmatism Athletes
East of Care/Good Compliance Residual Cyl with Rigid
Long-term Comfort Change Eye Color
Reduce Myopia Progression
•Stone (PMMA)
•Perrigin (Houston)
3. Comfort – important factor; don’t tell patient they will always experience excellent comfort. Even after adaptation, they cold occasionally experience dryness, FB sensation and redness
Discomfort is the number ONE reason for discontinuation of contact lens wear
4. Fees
5. Wearing Time/Expectations
6. Myths:
"The contact lens will get behind my eye"
"The contact lens will break on my eye"
"I can’t be fit as I have astigmatism"
"Contact lenses damage the eye"
"You must be 16 to wear lenses aren’t you"
"Contact lenses HURT"
Eye Protection:
•Rengstorff and Black – 125 cases where eyes were protected
•Wear with Protective Eyewear
3. What about the –0.50D myope???