PubMed Health⌕ Search

Biomedical subjects

T C Burton

Publications and source records attributed to T C Burton.

50 records · Page 3Linked to original sources
PubMed1977

The retinal manifestations of Rocky Mountain spotted fever.

The prominent ophthalmoscopic features in a 9-year-old white girl with Rocky Mountain spotted fever consisted of papilledema, cotton-wool spots, and dilated, tortuous retinal veins. Fluorescein angigography showed focal areas of capillary nonperfusion with blocked retinal and choroidal fluorescence at the cotton-wool spots. We observed perivascular staining adjacent to the infarcted areas. In addition to hyperfluorescence of the optic disks, late phase photographs demonstrated prolonged retention of intravascular fluorescein indicating obstruction to venous outflow.

Child↗
PubMed1977

Fractures of the orbital floor.

The charts of 324 patients treated for 363 orbital floor fractures between 1965 and 1973 were reviewed retrospectively. Of these, 38 (11 percent) were isolated floor fractures, 27 (8 percent) were rim and floor fractures, 168 (46 percent) were trimalar fractures and 130 (35 percent) were associated with complex facial fractures. On initial examination, 31 percent of the patients were found to have diplopia and 4 percent enophthalmos. Orbital prolapse was suspected in 31 percent of the patients. Thirty-seven percent of the patients had demonstrable ocular injury at the time of initial examination. Treatment was surgical in 336 of the fractures and non-surgical in 29. Of the surgical patients 140 had no support placed, 120 had antral support only, 51 had both antral support and orbital implant, and 20 had an orbital implant only. Postoperatively the incidence of diplopia was 8 percent in all patients, and 7 percent had enophthalmos. A smaller group followed for more than five months, were found to have diplopia in 17 percent and enophthalmos in 11 percent. Of the 29 patients treated non-surgically, none had persistent diplopia.

Diplopia↗
PubMed1976

Oribital floor fractures: a retrospective study.

A retrospective series of 365 orbital floor fractures was studied and many variables were analyzed. Some type of ocular or orbital adnexal damage was present in 32% of the patients. After a repair procedure there was a low incidence of decreased visual acuity, and there were no implant extrusions. Late enophthalmost and diplopia were found to be related to the type of orbital floor damage. The comminuted floor fractures and fractures associated with prolapse of orbital tissue into the maxillary antrum were more prone to demonstrate these late sequelae. Despite various surgical procedures there was a 19% incidence of late diplopia and an 11% incidence of late enophthalmos.

Adolescent↗
PubMed1976

"Twin peaks" papilledema: the appearance of papilledema with optic tract atrophy.

A woman with a right middle fossa meningioma causing right optic tract atrophy and papilledema had distinctive funduscopic changes. The ipsilateral eye showed temporal disc pallor and nasal edema. The contralateral disc showed edema of the upper and lower poles which was separated by a horizontal band of optic atrophy. The fluorescein angiographic changes clearly illustrate this pattern. Apart from its theoretical interest this appearance of papilledema and atrophy provides definite localizing information.

Adult↗
PubMedDate not supplied

Fluorescein angiography of the fundus: a schematic approach to interpretation.

Fluorescein angiographic patterns reveal a wide variety of anatomical, pathological and physiological information which, correctly interpreted, contributes to the differential diagnosis of fundus diseases and to the evaluation of appropriate therapeutic approaches. A schema for interpretation of the fluorescein angiogram is presented, following a logical progression from the initial determination of abnormal hypofluorescence of hyperfluorescence to the evaluation of the specific locations and features of the patterns, and their relationships to various disorders.

Choroid Neoplasms↗
PubMedDate not supplied

Posterior choroidal involvement in Letterer-Siwe disease.

A five-year-old child with Letterer-Siwe disease in remission was found to have decreased vision in on eye produced by a choroidal mass and secondary retinal detachment with cystic degeneration. Echography confirmed a vascularized disciform-like mass with possible involvement of the optic nerve. Florescein angiography showed a well vascularized, intensely staining lesion, with optic disc edema, destruction of the retinal pigment epithelium and cystoid macular edema.

Adolescent↗
PubMedDate not supplied

Iatrogenic breaks in Buuch's membrane in choroidal melanoma.

Three patients with choroidal melanoma have been observed to develop subretinal hemorrhages associated with their ocular examinations. One hemorrhage appears to have been caused by transillumination, while two others have occurred during radioactive phosphorus testing. Histopathology confirms defects in Bruch's membrane through which blood or tumor cells have entered the subretinal space.

Adult↗
PubMedDate not supplied

The influence of subconjunctival depot corticosteroid on choroidal detachment following retinal detachment surgery.

This study indicates that primary retinal detachment surgery on patients aged 55 or over is complicated by uveitis and choroidal detachment at approximate rates of 24% and 44%, respectively. These complications did not influence the anatomic cure rate or recovery of visual acuity. Although only 89 patients were recruited, the technique of random selection equally distributed the parameters studied and provided results of high reliability. The internal controls of the protocol prevented the examiners from being aware of whether the drug or placebo had been administered. We were concerned that the corticosteroid injection might have been producing the apparent increase in infection rate of 7.7% and the study was temporarily discontinued. Because statistical analysis showed there was no significant difference in infection rate between the treatment and control groups, the project could have been continued again.

Aged↗
PubMedDate not supplied

Preoperative factors influencing anatomic success rates following retinal detachment surgery.

The percentages of retinal detachment surgical cure rates determined in this study should not be regarded too literally. At least ten preoperative factors have been described which, acting in isolated fashion, are associated with decreased rates of retinal reattachment. Among these factors are visual acuity of 20/60 or less, myopia, preretinal membrane formation, alphakia, pars plana detachment, reoperation, age over 80 years, vitreous membranes, giant tear, and choroidal detachment. Usually there are several influential factors acting simultaneously. The behavior patterns of combinations of predictive factors have not been determined. In addition, there are undoubtedly some factors which are insignificant when acting alone but which have an adverse influence when arranged in certain combinations. More sophisticated analysis would be required to confirm this hypothesis.

Adolescent↗
PubMedDate not supplied

Angel-closure glaucoma following scleral buckling operations.

We have observed 22 patients with angle-closure glaucoma following scleral buckling operations. These patients did not have narrow anterior chamber angles preoperatively, and several were aphakix with surgical iris colobomas. The angle-closure glaucoma was manifest by a hazy cornea, elevated intraocular pressure, closed angle, absence or iris bombé, and presence of choroidal detachments. Treatment with cycloplegics and corticosteroids was more effective than treatment with miotics. A likely pathogenic mechanism is congestion and swelling of the ciliary body due to a temporary interference by the scleral buckle with venous drainage. Episcleral implants accounted for a statistically significant higher incidence of angle-closure glaucoma as compared to intrascleral implants.

Acute Disease↗