Results The data show that the distance between the outer canthus and the crus helicis is 8.733±1.311cm. The deep temporal nerve spread radially to the edge of musculus temporalis at 3.852 ±0.353cm and 6.317±0.330cm at a 60-degree angle to the horizontal line.
If the defective area was too large, the lateral compound flap may be extended to lower or upper eyelid 0.5 cm away from the outer canthus, then cut and propelled the two compound flaps to repair the full eyelid defect.
Conclusion:the lower single eyelid edge is not fit for designing a mark line for the double eyelid line operation But inside the lower single eyelid edges,it is suitable to set a mark line on the points 0.5mm-1mm upper than spots of inner canthus and outer canthus,and on the point 1mm-2mm upper than the middle spot.
Method At the traditional dual eyelid operation incision site,at patients' horizontal eyesight,cut the skin and determined the removal quantity,then shortened the aponeuroses of resection,suspended the inner and outer canthus ligament to recovery the transverse diameter of oculi rimae.
The corneal electrode was an ERG-jetTM referenced to an ipsilaterally (outer canthus) situated subdermal needle electrode and to the contralateral corneal electrode.
However, the variability of responses elicited with the outer canthus was less and the signal-to-noise ratio greater than with other reference positions.
We describe the use of a modified V-Y advancement flap from the lateral aspect of the outer canthus to cover a defect with three components on the lateral aspects of the upper and lower eyelids and the outer canthus of the eye.
A modification of the V-Y advancement flap to cover a defect of the outer canthus and both eyelids
The measurement is taken from the inner canthus to the outer canthus, and results are compared with published normative values.