摘要:

Upper eyelid position, pupillary diameter, and visual field impairment were measured in 26 eyes with adult-onset blepharoptosis. The magnitude of superior visual field impairment was inversely proportional to the distance between the upper lid margin and the pupillary aperture. The distance between the upper lid and the central corneal reflex was the most useful measurement for predicting visual field impairment. Superior visual field impairment was present when the distance between the upper lid and the central corneal reflex was <2.5 mm. Visual field impairment inferiorly, temporally, and nasally occurred when the central corneal reflex was obscured and <1.5 mm of the vertical diameter of the pupil was visible. Observation of the relationship between the upper eyelid and the pupillary aperture provides useful information for the performance of accurate diagnostic perimetry, as well as for the management of blepharoptosis.

ISSN:0740-9303    

出版商:OVID    

年代:1987

数据来源: OVID

摘要:

Procedures performed for total lid ectropion often fail to correct medial ectropion of the lower eyelid. Described herein is a technique of infracanalicular full-thickness transverse blepharotomy using rotational sutures for the treatment of medial ectropion. This procedure has been very useful for recurrent medial ectropion and also as a primary procedure. Concomitant canthal laxity should also be corrected.

ISSN:0740-9303    

出版商:OVID    

年代:1987

数据来源: OVID

摘要:

Prior investigations have established that changes in bio-electric potentials accompany the processes of wound creation and healing. In order to investigate these changes in an experimental full-thickness skin graft model, grafts were harvested from the dorsa of eight albino rabbits. Changes in potential were recorded over a period of 32 days, using silver-silver chloride electrodes and a recording polygraph. The potential measured across the skin graft became increasingly more electropositive until, between days 1 and 2, the potential abruptly reversed polarity. This negative potential lasted until day 4, when the conductivity again became positive, with a slow return to baseline measurements by day 32. Although these observations may indicate a bio-electric counterpart to the cellular events of wound healing, more study is needed.

ISSN:0740-9303    

出版商:OVID    

年代:1987

数据来源: OVID

摘要:

Recent advances in the understanding of eyelid anatomy in Caucasians and Asians are presented. Various techniques of lid crease operations are then described. A modified technique, combining excision of the skin, orbicularis, orbital septum, and preaponeurotic fat pad, and coupled with supratarsal fixation of the skin to the levator aponeurosis, is used by the author to achieve more predictable and long-lasting postoperative results.

ISSN:0740-9303    

出版商:OVID    

年代:1987

数据来源: OVID

摘要:

Patients with chronic progressive external ophthalmoplegia (CPEO) are often disabled by ptosis; however, conventional ptosis surgery may induce lagophthalmos and exposure keratitis. Ten patients with CPEO underwent ptosis correction via bilateral frontalis suspensions, using monofilament synthetic material. Three of these patients were also treated with lower eyelid horizontal tightening. The frontalis sling was adjusted to provide a firm linkage between the eyebrow and eyelid, but was loose enough to allow eyelid closure when the frontalis muscle is relaxed. All patients experienced lessening of ptosis and relief from visual obstruction. One patient required reoperation of one eyelid for undercorrection. No lagophthalmos or corneal complications occurred. The rationale for treatment, preoperative evaluation, and operative procedure in CPEO is discussed herein.

ISSN:0740-9303    

出版商:OVID    

年代:1987

数据来源: OVID

摘要:

Silicone stents are commonly used to intubate the nasolac-rimal system, and are left in place for several months. They are generally well-tolerated, but are not without complications. We report an unusual inflammatory reaction associated with the presence of a silicone stent that occurred in an individual who previously rejected several silicone implants in her metatarsal joints. The possible etiology and significance of a silicone allergy are discussed.

ISSN:0740-9303    

出版商:OVID    

年代:1987

数据来源: OVID

摘要:

Proplast was implanted in 15 cases of orbital reconstruction. Seven cases were orbital floor fractures, four cases were phthisical enophthalmos, and four cases were anophthalmic enophthalmos. In orbital floor fracture cases, thin (2-mm) Proplast was placed onto the fractured orbital floor after the incarcerated orbital tissue was released. To correct the enophthalmic socket, Proplast was shaped into small pieces (10 X 5 X 2 mm), then inserted into the subperiosteal space from all directions to fill up the orbital cavity. The results of these 15 cases were satisfactory. The average follow-up period is 13 months. The increased orbital volume seems less than the volume of the implanted Proplast; therefore, we suggest an 80–90% overcorrection rate in accordance with the computer measurements. In sum, Proplast serves as a very good material for orbital floor reconstruction and volume replacement.

ISSN:0740-9303    

出版商:OVID    

年代:1987

数据来源: OVID

摘要:

Histopathology provides a definitive diagnosis in the majority of orbital and periorbital tumor biopsies. Occasionally, a tumor cannot be diagnosed by conventional histopathologic means, or the diagnosis is suspect. Special stains have been the primary diagnostic alternative in the past; more recently they have been supplemented with electron microscopy. Immunocytochemistry, classification using monoclonal antibodies to specific cellular antigens, has added a new modality to pathologic diagnosis. Immunocytochemistry can aid in diagnosis in three ways: (a) suggestion of a firm diagnosis, (b) selection from a histopathologic differential, or (c) direction for further evaluation such as special stains or electron microscopy. Immunocytochemistry rarely provides a definitive diagnosis but instead confirms the histopathologic diagnosis. Intermediate filaments are cytoplasmic antigens to which monoclonal antibodies are available. Five antigenically distinct groups of intermediate filaments can help classify tumors derived from mesenchymal, muscle, epithelial, glial, or neural cells. Six cases of orbital or periorbital tumors are presented, which demonstrate the usefulness of intermediate filament immunocytochemistry for classification or confirmation of a histopathologic diagnosis.

ISSN:0740-9303    

出版商:OVID    

年代:1987

数据来源: OVID

摘要:

A clinical and experimental study was performed to demonstrate the usefulness of polytetrafluoroethylene (PTFE) as a graft material in ophthalmic plastic surgery. PTFE is non-antigenic, autoclavable, inert, and incorporated into surrounding tissue through fibrous ingrowth. PTFE implanted into rabbit eyelids for periods ranging from 2 to 21 weeks was examined grossly and microscopically. PTFE left uncovered by a conjunctival flap extruded; PTFE covered by a conjunctival flap was well tolerated without inflammation or extrusion and demonstrated dense fibrous capsular development with fibrous ingrowth along suture tracts and extensive vascular ingrowth. Fibrous tissue showed minimal growth into intrafiber pore spaces. PTFE was implanted into seven anophthalmic patients (one patch graft and six PTFE-wrapped secondary implants), with a postoperative follow-up of from 6 to 13 months. The material was well tolerated without extrusion, granuloma formation, or irritation. PTFE offers advantages over other graft materials and appears to be a useful addition to ophthalmic plastic surgery.

ISSN:0740-9303    

出版商:OVID    

年代:1987

数据来源: OVID

摘要:

Two patients developed cystic lesions in the anterior orbit 21 and 26 months after repair of blow-out fracture with orbital floor Gelfilm implants. Both patients had associated motility disturbances. Both lesions were surgically excised and found to be cystic in nature and filled with glistening gelatinous material consistent with partially absorbed, encysted gelatin film (Gelfilm). Histologically, a fibrous capsule was present; the contents of the cyst were not pathologically identifiable since they dissolved during fixation. Postoperatively, the motility disturbances improved in each patient.

ISSN:0740-9303    

出版商:OVID    

年代:1987

数据来源: OVID