摘要:

We evaluated the efficacy of expandable orbital implants to stimulate bone growth in the anophthalmic cat orbit. Eighteen cats unilaterally enucleated at 2 weeks of age received either expandable orbital implants (groups A1 and A2), solid silicone sphere implants of 12 mm or 8 mm (groups B1 and B2), or no implant (group C). Those cats with expandable implants (group A) had the implant size increased by 0.5 ml injections of saline at 2-week intervals starting at 8 weeks of age until a final volume of 4 cc was reached. Four of the expandable implants were found to be only partially inflated at 20 weeks and were subgrouped A2. At 20 weeks of age, the anophthalmic orbits with fully inflated expanders showed no significant difference in either orbital volume or orbital entrance area when compared with control orbits: volume (91.2%), area (95.7%) (p = 0.01). These same orbits also showed a significant increase in both orbital volume and orbital entrance area when compared with the growth obtained by any other group. These other groups showed growth, expressed as a percentage of normal growth, as follows: partially inflated implant: volume (63.0%), area (69.0%); 12-mm sphere implant: volume (57.0%), area (54.5%); 8-mm sphere implant: volume (46.5%), area (44.6%); no implant: volume (47.6%), area (43.6%) (p = 0.01). This study suggests that the use of expandable orbital implants stimulates bony growth in the immature cat orbit. Bony stimulation was proportional to volume implanted, and expandable orbital implants achieved maximum bony stimulation in the groups studied.

ISSN:0740-9303    

出版商:OVID    

年代:1992

数据来源: OVID

摘要:

Thirty consecutive patients with lower eyelid retraction after blepharoplasty were treated surgically with varying degrees of success. Successful outcome depended on various anatomic and pathologic factors, including the time elapsed since blepharoplasty, the prominence of the globe and its effect on eyelid contour, and the degree of septal or skin involvement. Satisfactory results were also dependent on surgical techniques used. We discuss several surgical techniques and offer advice concerning the selection of a surgical procedure in light of various pathologic parameters.

ISSN:0740-9303    

出版商:OVID    

年代:1992

数据来源: OVID

摘要:

This paper reports an occurrence of angle closure glaucoma following a combined blepharoplasty and ectropion repair. We are unaware of any previous reports of such an incident. Specific to this case was the coexistence of a cataract that contributed to the narrowing of the anterior chamber. This condition, along with pupil dilation secondary to the anesthetic, precipitated a phacomorphic angle closure glaucoma attack, necessitating emergency cataract surgery. Because other procedures involve pupillary dilation as a potential side effect, we recommend an increased awareness of this potential postoperative complication.

ISSN:0740-9303    

出版商:OVID    

年代:1992

数据来源: OVID

摘要:

Ectropion leads to chronic inflammation of the exposed conjunctiva. This inflammation can lead to shrinkage and to a cicatrical paradoxic inversion of the lashes. When the lid margin is surgically brought into its correct position, these lashes may become trichiatic. The surgical eversion of the lid margin at the time of the ectropion operation can prevent this complication.

ISSN:0740-9303    

出版商:OVID    

年代:1992

数据来源: OVID

摘要:

Hard palate mucosa grafts are an excellent replacement for tarsus and conjunctiva in eyelid reconstruction. Twenty-five eyelids from 18 patients underwent eyelid reconstruction using hard palate mucosa grafts. Patients were treated for a variety of disorders including postblepharoplasty lower eyelid retraction, cicatricial entropion, eyelid retraction secondary to thyroid eye disease, and lagophthalmos following surgery for paralytic ptosis. Surgical results were evaluated, grafts were measured for postoperative shrinkage, and donor site healing was recorded. Several patients had hard palate biopsy specimens evaluated. One of these patients also had a graft biopsied after it had been in place for 3 months. A review of hard palate anatomy and histology and a discussion of surgical technique are presented.

ISSN:0740-9303    

出版商:OVID    

年代:1992

数据来源: OVID

摘要:

Gold weight implants have been. used for over 30 years in the setting of eyelid rehabilitation following facial nerve paralysis; however, there has been a renewed interest by ophthalmologists in this reanimation technique in recent years. This article reviews the history of gold weight eyelid implantation and presents the results of gold weight eyelid implantation over a 15-month period in 23 patients. A 92% success rate was obtained (average follow-up, 12 months). Surgical technique and indications are discussed along with postoperative complications.

ISSN:0740-9303    

出版商:OVID    

年代:1992

数据来源: OVID

摘要:

Our understanding of tear-flow mechanics is based upon work performed on eyes in the normal, nucleated state. On this basis, decisions are made regarding the reconstruction of lacerated canaliculi. When called upon to repair such a laceration in a patient who is coincidentally undergoing a traumatic enucleation, the surgeon has traditionally done so when it was practical. This assumes that the tear-flow requirements in these patients are similar to those of patients in the nucleated condition. We have investigated twelve patients after traumatic enucleation and believe, based on this preliminary work, that eyes in the enucleated state may not have the same tear-flow requirements and therefore may not require canalicular reconstruction.

ISSN:0740-9303    

出版商:OVID    

年代:1992

数据来源: OVID

摘要:

Dacryocystorhinostomy with Jones tube placement has proven to be an effective method for correcting upper-system lacrimal drainage obstruction. The present case report illustrates the potential risk of bacterial contamination of the operative field during subsequent cataract surgery by retrograde passage of airway secretions. Temporary occlusion of the Jones tube by a silicone plug can eliminate this potential source of endophthalmitis. In addition, temporary occlusion of the Jones tube in the office can be used to determine the effectiveness of lacrimal drainage through a reconstructed canalicular system.

ISSN:0740-9303    

出版商:OVID    

年代:1992

数据来源: OVID

摘要:

Fifteen patients and 28 eyes with measurable eyebrow ptosis underwent standard upper eyelid blepharoplasty with or without sub-brow fat excision. The patients were educated about the status of their eyebrow position and the effects of either direct or indirect methods of brow elevation. The patients either refused or chose not to undergo browpexy by any method. Eleven patients and 22 eyes showed an insignificant change in their eyebrow position after surgery. Two patients and three eyes had a mild to moderate descent of the eyebrow and two patients had what was felt to be significant worsening of their eyebrow ptosis in one or both eyes. However, all were pleased with their result. Information as such, after a careful review of the literature, has not previously been published.

ISSN:0740-9303    

出版商:OVID    

年代:1992

数据来源: OVID

摘要:

Cholesterol granuloma of the orbit is an uncommon entity, although it frequently occurs in the middle ear and petrous apex. It is isodense with brain on computed tomographic scanning and cannot always be differentiated from more serious conditions. Magnetic resonance imaging (MRI) has facilitated the preoperative diagnosis of cholesterol granuloma outside of the orbit because of high signal characteristics on T1− and T2-weighted images. These findings have been considered nearly pathognomonic, but they have previously been described in only one patient with orbitofrontal involvement. We present a case of orbitofrontal cholesterol granuloma with uncharacteristic signal intensities on magnetic resonance imaging.

ISSN:0740-9303    

出版商:OVID    

年代:1992

数据来源: OVID