can anyone help me understand specifying center thickness on progressive lenses I got a job back from the lab today the pt rx was -5.00-2.00 with a +2.25 add ou. Pt previously wore a panamic in poly. My initial thought was 1.67 would be a better choice. I really like using the Definity so this is the combo I went with. The patient was and I were disappointed to see that the lenses were actually thicker than her previous pair. The eye size and dbl are similar in the two frames. I measured center thickness come to find out her old pair was a 1.0CT and the Definity was a 2.0CT, hence we have thicker lenses.
Can anyone give me some advice on specifiying CT, what are the FDA specifications? The person at the lab was only able to tell me that on "digital lenses you can not specify BC or CT". However, I just got an physio 360 in 1.74 with a 1.0 CT last week????
please help
thanx jamie
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