Unilateral ptosis correction with mersilene mesh frontalis sling in infants: thirteen-year follow-up report

Ptosis Correction: Our Modification and Experience

Background

Congenital ptosis not only results in an asymmetric facial appearance but can lead to permanent visual disturbances if not addressed at an appropriate time. Crawford used fascia lata for suspension of the eyelid to frontalis muscle, which remains a standard procedure for congenital ptosis correction to date, with an acceptable recurrence rate due to graft slippage. There are many modifications in this technique to reduce this complication; hence, in this study, we share our experience of a modification to improve the outcomes.

Methodology

This retrospective study was conducted at a private tertiary care hospital in Karachi for 10 years. In total, 26 patients fulfilled our inclusion criteria. All patients underwent a modified Crawford’s procedure under general anesthesia.

Results

In this study, the male-to-female ratio was 1:1.5. In total, 17 (65%) patients had unilateral ptosis. The mean age of presentation was 7 ± 3 years. All of our patients had poor levator function (<5 mm excursion) with a mean of 3 mm and mean grade of ptosis of 4 ± 1.6 mm. The mean preoperative marginal reflex distance (MRD) was +1.8 ± 0.6 mm. In this study, the patients had a mean postoperative MRD of 4.2 ± 0.7 mm at the four-week follow-up.

Conclusions

Although Crawford’s procedure gives promising results for ptosis correction, suturing the fascial sling to the tarsal plate ensures good anchorage and prevents relapse.

Factors related to amblyopia in congenital ptosis after frontalis sling surgery

Background

Amblyopia is a main concern in children undergoing frontalis sling surgery for repairing congenital ptosis. This study aimed to evaluate factors related to amblyopia in children undergoing frontalis sling surgery.

Methods

IRB-approved retrospective review of children under the age of 12 who received frontalis sling surgery. Preoperative demographic data, strabismus, margin reflex distance 1 (MRD1), lid fissure height, sling type, refraction errors, surgical outcome and amblyopia were evaluated.

Results

This study included 48 eyelid procedures performed in 38 patients. Median age was 4.0 years. Etiology was congenital ptosis in 42 eyes (87.5%) and blepharophimosis in 6 eyes (12.5%). Mersilene mesh was the sling material used in 36 eyes (75%), silicone in 6 eyes (12.5%), and polytetrafluoroethylene (PTFE) in 6 eyes (12.5%). Mean duration of follow-up was 27.8 ± 25.0 months (range, 3 to 128 months). Amblyopia was observed in 17 eyes (35.4%) at the final follow-up. Factors significantly associated with final amblyopia included blepharophimosis (p = 0.017), preoperative MRD1 ≤ − 1.0 mm (p = 0.038), preoperative lid fissure ≤4.5 mm (p = 0.035), preoperative anisometropia (spherical equivalent) (p = 0.011), and postoperative astigmatism (p = 0.026).

Conclusions

Study results suggest that blepharophimosis, preoperative MRD1 ≤ − 1.0 mm, preoperative lid fissure ≤4.5 mm, preoperative anisometropia (spherical equivalent), and postoperative astigmatism are associated with amblyopia after frontalis sling surgery in patients with congenital ptosis.

Surgical treatment of unilateral severe simple congenital ptosis

Unilateral congenital ptosis with poor levator function of ≤4 mm continues to be a difficult challenge for the oculoplastic surgeon. Surgical correction can be accomplished with unilateral frontalis suspension, maximal levator resection, or bilateral frontalis suspension with or without levator muscle excision of the normal eyelid. Bilateral frontalis suspension was proposed by Beard and Callahan to overcome the challenge of postoperative asymmetry, allowing symmetrical lagophthalmos on downgaze, postoperatively. However, most surgeons and patients prefer unilateral correction on the abnormal eyelid either with a frontalis suspension or maximal levator resection. Frontalis suspension may be performed through the various surgical techniques using different autogenous or exogenous materials. Autogenous fascia lata is considered the material of choice with low recurrence rates but carries the drawbacks of the difficulty of harvesting and postoperative morbidity from the second surgical site. Recent reports have suggested that maximal levator resection provides improved cosmesis, a more natural contour, and avoids brow scars. Although both treatments have shown to have similar success rates, there is much debate about what the most favorable method for treating severe unilateral ptosis. We review the literature on the various surgical treatments for unilateral severe congenital ptosis, including the rationale, advantages and disadvantages of each technique.

Suspensory Materials for Surgery of Blepharoptosis: A Systematic Review of Observational Studies

BACKGROUND

Frontalis suspension surgery is considered the procedure of choice in cases of blepharoptosis. Among all the materials used in this type of surgery, ophthalmic and plastic surgeons prefer to use autologous Fascia Lata. However, during years, other autogenous and exogenous materials have been introduced.

OBJECTIVES

The aim of this study was therefore that of systematically reviewing the functional results and the rate of complications of different synthetic materials, as compared to autogenous Fascia Lata. The primary objective was to determine the rates of Successful Surgeries (SSs) of these materials. The secondary objective was to assess the onset of complications. The following materials were investigated: Fascia Lata, Mersilene, polytetrafluoroethylene (PTFE) and Silicon.

DATA SOURCE AND METHODS

Following the Prisma procedure, on January 30th, 2016 we used the following electronic databases to select the studies: MEDLINE and Scopus.

RESULTS

The search strategy retrieved 48 publications that met the eligibility criteria of the systematic review. All studies were non-comparative. PTFE (n = 5) showed the best rate of SSs among the materials compared (statistically significant). Surgeries performed with autogenous Fascia Lata (n = 19) had a 87% rate of success those performed with Mersilene (n = 12)had 92% and those performed with Silicon (n = 17)88%. PTFE had the best outcome, with 99% success rate. As for complications, surgeries performed with PTFE had a higher rate of suture infections (1.9%) as compared to Fascia Lata, but lower incidence for all other complications.

CONCLUSIONS

Although most studies were good quality cohort studies, the overall quality of this evidence should be regarded as low due to their non-comparative design. Our data suggest that PTFE seems to be the most valid alternative material for frontalis suspension surgery, with low recurrence rates and good cosmetic and functional results.

Suspension surgery with autogenous fascia lata via a less invasive modification of the Crawford method on 85 patients with congenital severe eyelid ptosis

BACKGROUND

Autogenous fascia lata is considered the gold standard for frontalis suspension surgery to correct severe congenital upper eyelid ptosis.

METHODS

This study evaluated the efficacy of a less invasive modification of the standard technique described by Crawford. A total of 85 patients with severe congenital ptosis were enrolled in this study and submitted to surgical correction by frontalis suspension using autogenous fascia lata. Among these patients, 51 had previously undergone ptosis correction using other surgical techniques. The final lid level and contour were evaluated in addition to complications, such as lagophthalmos and ptosis recurrences.

RESULTS

Overall, the final results were evaluated as good in 71 of the cases, whereas 11 cases were graded as satisfactory and three cases as poor according to the success criteria. The average increase in eyelid height, measured as the marginal reflex distance (MRD), was 2.9 mm. The best results were obtained in the group of patients with no previous eyelid surgeries. The examples of poor results could be attributed to lagophthalmos and were all confined to the group of patients with a previously failed surgery that employed synthetic suspension materials and levator shortening procedures. No recurrences were observed during the follow-up interval, which lasted an average of 6.4 months (range = 2-59 months).

CONCLUSIONS

This technique allows a safe surgery with an overall high rate of success. This surgery is also safe and successful in cases of congenital ptosis with associated abnormalities, such as blepharophimosis, and in cases that require secondary ptosis repair.

Surgical treatment of severe congenital ptosis in patients younger than two years of age using preserved fascia lata

PURPOSE

To investigate the clinical outcome of a frontalis sling using preserved fascia lata in the treatment of vision-obscuring congenital ptosis in patients less than 2 years of age.

DESIGN

Retrospective, interventional case series.

METHODS

The study was conducted in an institutional setting and included 82 patients with visual axis-obscuring congenital ptosis. All patients underwent frontalis sling surgery with preserved fascia lata between November 1994 and December 2008, and had a minimum follow-up of 6 months. Visual and surgical outcomes were assessed by reviewing clinical photographs and medical charts. Surgical outcomes were defined as good, fair, or poor, based on the postoperative lid level.

RESULTS

The mean age at surgery was 15.3 ± 4.8 months. After a mean follow-up of 54.8 ± 41.4 months, 64 patients (78.0%) showed good or fair surgical outcomes. Reoperation was performed in 16 of the patients with poor or fair results. Amblyopia was treated postoperatively in 75 of the 82 patients (91.5%) and had improved in 65 patients at the last follow-up. Postoperative entropion was identified in 5 cases, all of which were treated successfully. No other significant complications occurred.

CONCLUSIONS

For patients younger than 2 years of age, preserved fascia lata may be an appropriate substitute for autogenous fascia lata in frontalis sling surgery. Its long-term stability may enable a permanent effect in a certain proportion of patients, and may not require secondary surgery, which is common with synthetic materials.