Upper Eyelid Contour Changes After Müller's Muscle Conjunctiva Resection.

PURPOSE

To analyze the upper eyelid contour after Müller's muscle conjunctiva resection (MMCR) performed by four different surgeons.

METHODS

Comparative cross-sectional analysis of the pre- and postoperative contours of a control group and four groups of upper lids (n = 88) of 65 patients who underwent MMCR at four international centers. The procedure employed was essentially the same as described by Putterman but performed with different instruments to entrap the posterior lamella. Multiple medial and lateral margin lid distances were measured on Bézier lines expressing the pre- and postoperative lid contours.

RESULTS

Preoperatively, two groups had significant lateral and medial ptosis. After MMCR, the lateral segment of the lid's contour was corrected in all groups. In the two groups with more pronounced ptosis, the nasal lid contour was undercorrected.

CONCLUSIONS

In MMCR, regardless of the instrument used to entrap the posterior lamella, the amount of medial tissue resection is essential to avoid postoperative nasal undercorrection.

LEVEL OF EVIDENCE III

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