RX: OD +2.00 -.50 X 85
OS +1.75 -.25 X 105
ADD +2.25
Lenses are the same shape and both fit at 20 hi.
Material: Poly
Dad (pt.) previously wore the Sola One HD in 1.67 and was quite happy. Same shape, same seg.
First pair tried on was the Definity. I noticed him looking for the reading area which prompted me to triple-check my measurements. They were bang-on, so we proceeded.
For near vision: Dad felt that overall the Definity had a wider viewing area at near than the GT2, but was instantly able to find the optimum viewing area in the GT2 whereas he had to "search it out" at first in the Definity.
Intermediate: Again, a little wider in the Definity than the GT2 but had to tilt his head up in the Definity for best VA. The GT2 allowed a more natural head angle at his computer as well as more vertical - he could move head up or down a little and not lose clarity - so sitting upright or slouching did not affect head-tilt comfort. The GT2 was more "forgiving" of posture.
Distance: Here is where it gets interesting. He felt that the GT2 had significantly more VA in the lens both vertically and horizontally. To be specific, I had him focus on a target with the Definity while checking the segs and see his best head position for distance VA. Looking straight ahead comfortably was what worked, but I had him try tilting his head up and down until the object lost crispness. So on his own he repeats this with the GT2 and tells me that he had clarity both looking ahead naturally as well as tilting his head down and looking through the very top of the lens. He said that the Definity lost focus as he tilted his head downwards.
Walking down a flight of stairs he felt no significant difference in comfort between the two.
SUMMARY:
While the Definity has a wider near and intermediate zone the patient felt that he had to raise his chin higher than normal in order to obtain best VA. Pt. appreciated the greater distance viewable lens area in the GT2, especially for driving. Pt. also liked the "instant" ability to find NV acuity in the GT2 lens even though he liked the wider viewing area of the Definity at NV and intermediate.
When asked if he had to give one up, which one would he choose - he answered: "Now why do I have to do that?"
I guess they both have their advantages! (The advantage of having an optician for a daughter, too!)
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