Appeal No. 2005-1945 Page 7
Application No. 09/777,510
passageway 86 (e.g., hole) is provided in the center optical axis of the lens portion 84
for equalizing the pressure between the anterior surface 88 and posterior surface 90 of
the intraocular refractive correction lens 80. This air passageway 86 allows for
equalization of pressure between the anterior chamber and posterior chamber of the
eye. Otherwise, a significant suction or negative pressure can occur on the anterior
surface of the intraocular refractive correction lens sucking the back of the iris into
contact therewith and causing damage or wear to the iris. The intraocular refractive
correction lens 80 is provided with a pair of indents 92 for allowing the intraocular
refractive correction lens 80 to be manipulated under the iris during the implantation
operation. The indents 92 are significantly better than through holes for purposes of
manipulation, since the bottoms of the indents prevent penetration of a manipulating
tool through the lens and inadvertently into contact with the natural lens that would
cause an immediate cataract of the natural lens.
Wanders
Wanders' invention relates to a multifocal contact lens, having a reading part in
the bottom part and another lens in the top part. It can be seen from Figure 4 that the
transition between the distance part with radius Rv and the reading part with radius R1 is
particularly gradual. This means that the eye will suffer little or no irritation, and wearing
comfort will be increased and image discontinuity and reflection will be avoided. This
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