Extrinsic force applied by surgeon can be classified as “stretching” and “shearing”. Stretching force is applied by a cystitome i.e. typically a double bended 27 gauge insulin needle. Double curve facilitates manual maneuver and puts the tip of the needle on the anterior capsule. “Stretching” represents applying the force in the same plane as radial zonular force. If the needle of cystitome is stuck on the external surface of anterior capsule and subsequently pulled toward the center of capsule, the opposed radial zonular force at the contact point would extend the tear toward periphery. Accordingly it is advisable to apply cystitome stretch in a degree of less than 180° in regard to the centrifugal vector of zonular force. As a rule of thumb, the cystitome stretch vector should be rotated at least once for each 45–50° of anterior capsule tearing to accomplish a well-shaped capsulotomy. In summary the needle (cystitome) technique is started by making a horizontal puncture on the anterior capsule. A radial incision is then started from this puncture point centrifugally extending as near as 1 mm (but not closer) to the desired imaginary border of capsulorhexis. Subsequently a small triangular shaped capsular flap is made by putting the needle beneath the anterior capsule and precise slight elevation of the needle tip. When the flap is formed it should be extended by pull/push forces until complete circular capsulotomy is accomplished and the flap’s base reaches the start point.10