Clinical Outcomes of Conjunctiva-Muller Muscle Resection and Factors Which Affect Success

PURPOSE: To investigate clinical outcomes and to analyze the factors of successful treatment of conjunctiva-Muller muscle resection (CMMR) in patients with mild to moderate ptosis. METHODS: The medical records of 22 patients (30 eyes) with upper lid ptosis were retrospectively reviewed. All patients underwent conjunctiva-Muller muscle resections, and four patients (seven eyes) underwent concurrent upper lid blepharoplasty. The mean follow-up period was 81.62 +/- 21 days. Pre- and post-operative MRD1, IPF and pupil to brow distance were measured using the Image J program. A preoperative phenylephrine test and a pathologic examination were performed to analyze the presence of Muller's muscle and the tear secreting glands from the CMMR specimens. RESULTS: The overall success rate of the procedure was 93%. Postoperatively, the MRD1 increased on average by 1.47 mm (p = 0.00) and increased by an average of 1.72 mm when the phenylephrine test response was greater than 2 mm and by 0.99 mm when the response less than 2 mm. The Muller muscle was observed in every specimen. CONCLUSIONS: Conjunctiva-Muller muscle resection is an effective and safe method for treating mild to moderate ptosis, for which the preoperative phenylephrine test result is the most important factor for surgical success.

Clinical Effects of Conjunctiva-Muller Muscle Resection in Anophthalmic Ptosis

PURPOSE: To evaluate the clinical effects of conjunctiva-Muller muscle resection through conjunctival incision in anophthalmic patients with mild ptosis. METHODS: Conjunctiva-Muller muscle resection was performed by one surgeon in 8 patients (8 eyes) who had received evisceration or enucleation and responded to 10% phenylephrine solution to correct ptosis. The average age of the patients was 35.87+/-13.4 years. Ptosis was seen from 1 to 34 months after evisceration or enucleation. The preoperative MRD 1 was -2 to 0.5 mm (average: -0.25+/-1.10 mm) and the difference of MRD 1 between before and after 10% phenylephrine use was 2.56+/-0.98 mm. The Muller muscle was resected 7.5 to 9 mm through conjunctival incision during surgery to match the MRD 1 of sound eye. Mean follow-up period after the operation was 2 to 16 months (average: 8.1 months). RESULTS: Postoperatively, the MRD 1 increased by 1.81+/-0.88 mm on the average, corresponding to the improvement in lid elevation after the use of 10% phenylephrine performed before resection. Surgery was successful in most patients, and postoperative difference in MRD 1 was less than 1 mm from the sound eye. No special postoperative complication was observed. CONCLUSIONS: Conjunctiva-Muller muscle resection is one of the effective methods of correcting mild ptosis in anophthalmic patients.

Clinical Effects of Conjunctiva-Muller Muscle Resection in Anophthalmic Ptosis

PURPOSE: To evaluate the clinical effects of conjunctiva-Muller muscle resection through conjunctival incision in anophthalmic patients with mild ptosis. METHODS: Conjunctiva-Muller muscle resection was performed by one surgeon in 8 patients (8 eyes) who had received evisceration or enucleation and responded to 10% phenylephrine solution to correct ptosis. The average age of the patients was 35.87+/-13.4 years. Ptosis was seen from 1 to 34 months after evisceration or enucleation. The preoperative MRD 1 was -2 to 0.5 mm (average: -0.25+/-1.10 mm) and the difference of MRD 1 between before and after 10% phenylephrine use was 2.56+/-0.98 mm. The Muller muscle was resected 7.5 to 9 mm through conjunctival incision during surgery to match the MRD 1 of sound eye. Mean follow-up period after the operation was 2 to 16 months (average: 8.1 months). RESULTS: Postoperatively, the MRD 1 increased by 1.81+/-0.88 mm on the average, corresponding to the improvement in lid elevation after the use of 10% phenylephrine performed before resection. Surgery was successful in most patients, and postoperative difference in MRD 1 was less than 1 mm from the sound eye. No special postoperative complication was observed. CONCLUSIONS: Conjunctiva-Muller muscle resection is one of the effective methods of correcting mild ptosis in anophthalmic patients.

The Objective Change of the Eyelid after Upper Blepharoplasty

PURPOSE: To evaluate the morphological changes in the external eyes after upper blepharoplasty. METHODS: Twenty-six eyes of 13 patients undergoing upper blepharoplasty from May 2002 to May 2003 were selected. All surgeries were performed by one surgeon. MRD1, MRD2, interpalpebral fissure height, and levator function test were each measured twice, and the averages were calculated. Likewise, significant changes were checked before and after the operation. The subjects were divided into two groups. For group A (n=12), a double line suture was stitched at the levator aponeurosis, which was directly superior to the tarsal plate. In group B (n=14) the suture was stitched at a levator aponeurosis 3 mm superior to tarsal plate. The delta levator function (postoperative mean levator function minus preoperative mean levator function) measurements were calculated and compared between the two groups. RESULTS: The MRD1 was 2.04+/-0.75 (mean+/-SD) before the operation, and 2.0+/-0.81 after the operation. MRD2 was 5.23+/-0.75 before the operation, 5.35+/-0.54 after operation. Interpalpebral fissure height was 7.27+/-0.38 before the operation and 7.35+/-0.63 after the operation. There were no statistically significant factors before and after the operation in MRD1, MRD2 and interpalpebral fissure height. The levator function was 14.04+/-1.80 before versus 16.19+/-1.58 after. This increase was statistically significant (p<0.01, Wilcoxon signed ranks test). The delta levator function was 1.58+/-0.90 for group A and 1.96+/-1.36 for group B. CONCLUSIONS: After upper blepharoplasty, the measurement of levator function increased significantly.

Changes in Eyelid Height with Time after Levator Resection under Local Anesthesia

PURPOSE: To evaluate the factors that affect the eyelid height changes during the postoperative period in patients who underwent levator resection under local anesthesia. METHODS: Among the 242 patients that underwent levator resection under local anesthesia by the same surgeon between January on 1995 and December 2003, marginal reflex distance 1 (MRD1) measurements were performed using a caliper in 91 patients who were followed for more than 3 months. RESULTS: There were 36 males and 55 females, aged between 12 and 78 years (average of 33.6 years). The average follow-up period of the patients was 8.7 months (3 months ~ 58 months). During this period, 86 patients (94.5%) experienced satisfactory results. The average change in the MRD1 of the eyelids preoperatively, during the operation, and 1 week, 1 month, 3 months, 6 months, and 1 year postoperatively were 0.8 mm, 3.9 mm, 3.0 mm, 2.7 mm, 2.5 mm, 2.4 mm, and 2.2 mm, respectively. The MRD1 decreased 1.2 mm after 1 month and stabilized. When the levator function was greater than 8 mm, the height of the eyelids stabilized within 1 week. The worse the function of the levator palpebrae, such as in the case of congenital ptosis, the greater the correction was needed. CONCLUSIONS: Levator resection under local anesthesia is a preferable method in adjusting the height of the eyelids. In a patient with poor levator function, a greater amount of correction is needed to achieve a satisfactory eyelid height.

A Proposal of Digital Photo-Biometry of MRD1 and New Levator Function Test

PURPOSE: The history of biometry dates back to ancient Greek. The ideal body ratio from biometry is used as a guideline in many works of art. Biometry is also used as a medical standard to determine normal or abnormal. Since the biometry of face is so complicated, many surgeons tend to regard preoperative evaluation as a bother and substitute medical records with some photographs. We introduce a new method to measure MRD1 and levator function using digital photographs, which becomes widely used lately. METHODS: MRD1 can be measured with the primary- gaze-view photo which is magnified by PhotoshopR 7.0.1. The distance from coneal reflex of ring flash to upper eyelid margin is converted to mm-unit using the piece of ruler attached on the patient's face. Levator function can be measured with up-gaze-view photo and down-gaze-view photo which are superimposed on another. The excursion distance of upper eyelid margin (a) and the excursion distance of eyebrow (b) are measured respectively. The levator function can be assessed through subtraction of two values (a-b). This method is simple and precise and can be applied directly to patient without photos. RESULTS: Using magnified digital photos and computer, this method can reduce personal error and instrumental error. Taking some digital photos doesn't take long time, so it can reduce the effort of preoperative evaluation and discomfort of patients. CONCLUSION: Digital photo-biometry is useful for retrospective study. Especially reducing personal error, it is useful when the number of specimens is huge. New levator function test is much more useful for Asian- specific eyes than Berke's method allowing frontalis muscle compensation.