9 results on '"Asa D Morton"'
Search Results
2. Minimally Invasive Midface Elevation Using a Percutaneous Suspension Suture Sling Technique
- Author
-
Asa D. Morton
- Subjects
Eyelid Skin ,Sling (implant) ,business.industry ,Ectropion ,Anatomy ,medicine.disease ,Nasolabial fold ,eye diseases ,Fat pad ,body regions ,medicine.anatomical_structure ,Ptosis ,medicine ,sense organs ,Eyelid ,medicine.symptom ,skin and connective tissue diseases ,business ,Orbital septum - Abstract
Understanding aging changes of the midface is necessary to address the functional and aesthetic concerns of our patients. With age, the malar fat pad descends and overlaps the relatively fixed nasolabial fold causing it to deepen. Above the fat pad the arcus marginalis and orbital septum limit descent of the orbital fat. As the cheek descends, a division develops between the eyelid and malar fat pad. These hollows cause shadowing beneath the eye, creating a tired and aged appearance. With further ptosis of the midface, the eyelid skin becomes distracted inferiorly. Combining this with horizontal laxity of the eyelid can result in significant ectropion. Standard aesthetic techniques for lower face lifting generally do not adequately address the changes in the midface.
- Published
- 2011
- Full Text
- View/download PDF
3. Upper Eyelid Blepharoplasty
- Author
-
Asa D. Morton
- Subjects
Blepharoplasty ,Eyelid Skin ,medicine.medical_specialty ,medicine.anatomical_structure ,business.industry ,medicine.medical_treatment ,medicine ,Brow ptosis ,Eyelid ,business ,Orbital septum ,Surgery - Abstract
Upper eyelid blepharoplasty is one of the most common facial aesthetic procedures performed today. Then surgery is performed for both functional and aesthetic purposes by surgeons from a number of different subspecialties. As the surgery involves one of our most important sensory organs, the eye, a detailed understanding of relevant anatomy, operative technique, and potential risks is paramount. With this in mind, the procedure is generally safe, effective, and reliably reproducible when experience is gained. To attain these kinds of results, care and attention must be given to patient selection, expectations, the preoperative evaluation, the surgical technique, and to postoperative care. Complications are usually mild and self-limiting and can be addressed with conservative measures and reassurance.
- Published
- 2011
- Full Text
- View/download PDF
4. Comprehensive midfacial elevation for ocular complications of facial nerve palsy
- Author
-
Adam S. Hassan, Monte O. Harris, Randy O. Mauffray, Asa D. Morton, Robert G. Fante, and Victor M. Elner
- Subjects
Adult ,Male ,medicine.medical_specialty ,genetic structures ,Lagophthalmos ,Facial Paralysis ,Ectropion ,Facial Nerve Diseases ,Preoperative care ,medicine ,Lower lid retraction ,Humans ,Aged ,business.industry ,Eyelids ,General Medicine ,Middle Aged ,medicine.disease ,eye diseases ,Facial paralysis ,Surgery ,Facial Nerve ,medicine.anatomical_structure ,Face ,Facial nerve palsy ,Female ,sense organs ,Eyelid ,business - Abstract
A chief morbidity of facial nerve palsy is ocular exposure, which is largely due to lower lid retraction and ectropion.To assess the role of midfacial elevation in the comprehensive surgical treatment of paralytic lower lid malposition and ocular exposure.Eleven patients with chronic facial nerve palsy causing symptomatic ocular exposure were treated with subperiosteal midface elevation as a component of comprehensive lower lid elevation. Other procedures were performed concomitantly to treat lower lid ligament laxity and reduced lower lid rigidity, as required. Preoperative and postoperative ocular exposure symptoms, visual acuity, lower lid position, lagophthalmos, and keratopathy were compared.At an average of 17 months of follow-up, all patients reported improvement in symptoms. Visual acuity was maintained or improved in all patients. Lower eyelid position (P =.003), lagophthalmos (P =.07), and keratopathy (P.001) were also improved.Midfacial elevation is a safe and effective surgical adjunct in the treatment of lower eyelid retraction in chronic facial palsy. Its use reduces the need for tarsorrhaphy, which limits the binocular visual field and negatively impacts cosmesis.
- Published
- 2003
5. Lacrimal gland hemangiopericytoma
- Author
-
Milton Boniuk, Ramon L. Font, Kathleen A. Meyer, Victor M. Elner, Asa D. Morton, Andrew Flint, and Michael A. Burnstine
- Subjects
Hemangiopericytoma ,medicine.medical_specialty ,Pathology ,Fossa ,biology ,business.industry ,CD34 ,Lacrimal gland ,medicine.disease ,biology.organism_classification ,Lesion ,Ophthalmology ,Vascularity ,medicine.anatomical_structure ,medicine ,Histopathology ,medicine.symptom ,Differential diagnosis ,business - Abstract
A 45-year-old man and a 21-year old man presented with palpable lacrimal gland fossa masses and mechanical ptosis and proptosis, respectively. Computed tomography demonstrated well-circumscribed, partially cystic tumors. Echography in one case showed a well-outlined, predominantly low-reflective lesion with cysts and moderate vascularity detected by Doppler flow and standardized A-scan studies. Histopathology of the excised tumors revealed them to be CD34 antigen-positive hemangiopericytomas, in one case associated with lacrimal gland ductal cysts (dacryops) and with cyst-like spaces containing proteinaceous exudate in the other. No recurrence was found at 14 and 30 months, respectively. Although uncommon, hemangiopericytomas should be included in the differential diagnosis of lacrimal gland tumors. Orbital ultrasound revealing vascularity may be a useful adjunct in this diagnosis. Cystic degeneration or dacryops due to tumor infiltration and compression of lacrimal gland ducts may occur.
- Published
- 2002
6. Porous polyethylene as a spacer graft in the treatment of lower eyelid retraction
- Author
-
Christine C. Nelson, Yoshito Ikada, Asa D. Morton, and Victor M. Elner
- Subjects
medicine.medical_specialty ,Conjunctiva ,Biocompatibility ,Biocompatible Materials ,Prosthesis Implantation ,chemistry.chemical_compound ,medicine ,Animals ,business.industry ,Lower eyelid retraction ,Soft tissue ,Biomaterial ,Eyelids ,General Medicine ,Polyethylene ,eye diseases ,Surgery ,Ophthalmology ,medicine.anatomical_structure ,chemistry ,Eyelid Diseases ,sense organs ,Eyelid ,Implant ,Rabbits ,Polyethylenes ,business ,Porosity - Abstract
Purpose: An experimental study was performed to: 1) assess the tolerance and incorporation of porous polyethylene (Medpor) in the posterior lamella of the rabbit lower eyelid; 2) analyze the effect of implant thickness on incorporation; 3) investigate the ability of conjunctiva to grow over vascularized Medpor and; 4) determine the effects of Medpor surface modification on biocompatibility and fibrovascularization. Methods: In phase I, 10 rabbit eyelids were operated on to analyze the effects of implant thickness and to develop the surgical technique used in phase II of the study. In phase II, 20 lower eyelids of 10 rabbits received 0.85-mm-thick Medpor grafts, each rabbit receiving both an uncoated implant and one coated with an immobilized collagen. Results: There were no extrusions in phase II. with a postoperative follow-up from 14 to 17 weeks. Fourteen of 20 eyelids had full-thickness conjunctival incisions or excisions placed over the Medpor implant to determine the growth potential of conjunctiva over a vascularized implant. All but one eyelid showed complete defect coverage, occurring in as little as 3 days. Histopathology indicated complete Medpor fibrovascularization as early as 4 weeks after implantation. Because neither coated nor uncoated implants extruded in phase II, no conclusions can be drawn regarding the efficacy of Medpor surface modification. Conclusion: Medpor was well tolerated in this soft tissue application, and it offers advantages over other graft materials.
- Published
- 2000
7. Recurrent trichofolliculoma of the upper eyelid margin
- Author
-
John T. Headington, Victor M. Elner, Asa D. Morton, and Christine C. Nelson
- Subjects
Adult ,Reoperation ,medicine.medical_specialty ,Eyelid Neoplasms ,Benign tumor ,Injections ,Lesion ,medicine ,Recurrent trichofolliculoma ,Humans ,Glucocorticoids ,Neoplasms, Basal Cell ,business.industry ,Trichofolliculoma ,Eyelids ,General Medicine ,medicine.disease ,Surgery ,Ophthalmology ,medicine.anatomical_structure ,Female ,Eyelid ,medicine.symptom ,Neoplasm Recurrence, Local ,business ,Wedge resection (lung) ,Follow-Up Studies - Abstract
Summary We report a woman who had a recurrent trichofolliculoma on the upper eyelid margin. Only three cases of this benign tumor on the eyelid have been reported, and no recurrence in this location had been noted in the literature. The lesion, present for 6 years, had been excised twice previously (3 and 4 years before), recurred, and had been injected with a steroid preparation 2 years earlier. Lashes, both normal-looking and immature, arose from the center area of this lesion, and telangiectatic vessels were on its surface. Full-thickness wedge resection was used to excise the lesion completely. Complete primary excision of trichofolliculoma is important, and local steroid preparations should not be used.
- Published
- 1998
8. Transcaruncular Medial Canthal Ligament Plication for Repair of Lower Eyelid Malposition
- Author
-
Adam S. Hassan, Susan G. Elner, Asa D. Morton, Hakan Demirci, and Victor M. Elner
- Subjects
Adult ,Male ,medicine.medical_specialty ,Adolescent ,Lagophthalmos ,Ophthalmologic Surgical Procedures ,Preoperative care ,medicine ,Humans ,Child ,Aged ,Retrospective Studies ,Aged, 80 and over ,Ligaments ,business.industry ,Eyelids ,Medial canthal ligament ,Middle Aged ,medicine.disease ,eye diseases ,Surgery ,body regions ,Ophthalmology ,medicine.anatomical_structure ,Eyelid Diseases ,Ligament ,Female ,Eyelid malposition ,sense organs ,Eyelid ,business ,Ophthalmologic Surgical Procedure - Abstract
To evaluate the long-term efficacy of transcaruncular medial canthal ligament (MCL) plication in the treatment of eyelid malposition.Transcaruncular MCL plication was performed on 176 eyelids of 125 patients with symptomatic ocular exposure due to lower eyelid malposition in which MCL laxity was an important component. Preoperative and postoperative ocular exposure symptoms, lower eyelid position, lagophthalmos, and keratopathy were compared.At an average +/- SD follow-up time of 25 +/- 27 months (range, 1-103 months), 88% of preoperative symptoms resolved or improved. Lower eyelid position (P.001), lagophthalmos (P.001), and keratopathy (P.001) were significantly improved. In 11% of eyelids undergoing MCL plication as the only repair, results were comparable with those in which other repairs were performed concurrently. Complications were suture breakage in 2 cases and pyogenic granuloma in 1 case.Transcaruncular MCL plication is a safe and effective technique for MCL laxity that contributes to lower eyelid malposition. This minimally invasive technique achieves good functional and cosmetic outcomes by re-establishing the vectoral forces for eyelid support that are normally provided by the tripartite ligament.
- Published
- 2007
- Full Text
- View/download PDF
9. Lateral Extensions of the Müller Muscle
- Author
-
Brad N. Lemke, Valerie A. White, Asa D. Morton, and Victor M. Elner
- Subjects
Pathology ,medicine.medical_specialty ,Sympathetic Nervous System ,genetic structures ,Eye disease ,Lacrimal gland ,Eye Enucleation ,medicine ,Humans ,Aponeurosis ,business.industry ,Thyroid ,Lacrimal Apparatus ,Eyelids ,Muscle, Smooth ,Anatomy ,medicine.disease ,Graves Disease ,eye diseases ,Lobe ,Ophthalmology ,Palpebral fissure ,medicine.anatomical_structure ,Orbital Neoplasms ,sense organs ,Eyelid ,business ,Orbit - Abstract
Objectives: To define the lateral extension of the Muller muscle and to elucidate its involvement in the development and surgical treatment of Graves (thyroid) eye disease. Methods: Twelve lateral halves of orbits exenterated from patients with medial or posterior orbital neoplasms were fixed, embedded, and step sectioned at 250-μm intervals to produce histological sections. Gross anatomical dissections of human cadaver heads were also used to corroborate the histological findings. Results: Histological analysis revealed that the Muller muscle extended laterally between the orbital and palpebral lobes of the lacrimal gland in all specimens. The smooth muscle fibers were found to interdigitate with lacrimal ducts passing from the orbital to palpebral lobe and to extend close to the ductal orifices at the conjunctival surface. Gross dissections confirmed that the Muller muscle accompanied the levator aponeurosis lateral extension, which is known to pass between the orbital and palpebral lobes of the lacrimal gland. Conclusions: Our anatomical findings suggest that the Muller muscle may contribute to the temporal flare frequently seen in eyelid retraction associated with thyroid eye disease. They may also explain the difficulty of treating lateral eyelid retraction in thyroid eye disease and indicate the need for new surgical approaches for severe lateral eyelid retraction.
- Published
- 1996
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.