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Biomedical subjects

C B Bowman

Publications and source records attributed to C B Bowman.

8 recordsLinked to original sources
PubMed1995

Primary intraocular lens implantation in the setting of penetrating ocular trauma.

PURPOSE: To evaluate the clinical outcome of patients who underwent lensectomy and intraocular lens (IOL) implantation at the time of primary repair of a penetrating ocular injury. METHODS: A review of 14 patients who sustained cataracts and lens rupture in the setting of a corneal laceration to determine anatomic and visual outcome, in addition to complications related to the primary IOL. RESULTS: The IOL remained anatomically stable in all 14 patients with no complications encountered at implantation or after surgery. Final visual acuity in 9 of the 14 patients was 20/40 or better. Six patients underwent pars plana vitrectomy for removal of an intraocular foreign body. CONCLUSION: Intraocular lens implantation at the time of lensectomy and primary repair of a corneal laceration allows good visual rehabilitation with restoration of binocular function and serves as an alternative to contact lens correction in select patients.

Adolescent↗
PubMed1994

Cutaneous malignant melanoma with diffuse intraocular metastases.

A 63-year-old man with a history of cutaneous melanoma and a 3-month history of visual loss in his right eye presented with marked pigmentation of the anterior-segment structures, including trabecular meshwork, iris, and lens surface, with pigment dispersion in the aqueous and anterior vitreous in the right eye. Clinical examination and echography showed no evidence of an intraocular tumor although metastatic melanoma was suspected. Pathologic examination revealed numerous heavily pigmented melanoma cells throughout the anterior segment of the eye, mainly concentrated in the anterior vitreous near the ciliary body. No discrete tumor was found on multiple sections through the globe.

Anterior Eye Segment↗
PubMed1992

Oral therapy in diffuse unilateral subacute neuroretinitis.

Diffuse unilateral subacute neuroretinitis is an endemic disease associated with severe visual loss in the southeastern and midwestern United States and the Caribbean. It is caused by a single nematode that may wander in the subretinal space for many months or years. Until recently, the only effective treatment has involved the difficult and time-consuming biomicroscopic detection of the worm followed by photocoagulation. This report describes the use of oral thiabendazole in four patients with presumed diffuse, unilateral, subacute neuroretinitis. Serial fundus photography was used to detect evidence of early destruction of the worm.

Administration, Oral↗
PubMed1991

Noninvasive repositioning of a posterior chamber intraocular lens following pupillary capture.

A case of pupillary capture of a posterior chamber intraocular lens (IOL) is presented. A nonsurgical approach that may help reposition an IOL optic entrapped in a pupillary capture when chemical mydriasis fails is described. Suggestions for a logical progression of nonsurgical procedures to help release optic capture are presented. Possible causes and preventative measures to decrease the incidence of pupillary capture of a posterior chamber IOL are discussed.

Adult↗
PubMed1990

Primary chiasmal germinoma. A case report and review of the literature.

A case is presented in which an adult man with painless progressive loss of vision subsequently was found to have a primary suprasellar/perichiasmal germinoma (ectopic pinealoma). A review of the literature revealed 93 similar cases of germinoma occurring in the perichiasmal region and these are tabulated. The diagnosis and management of this lesion are discussed, including the recognition of the characteristic neuroendocrinologic triad of diabetes insipidus, visual changes, and hypopituitarism. Of 64 cases from the literature wherein presenting symptoms were reported, 56 (87.5%) had diabetes insipidus, 53 (82.8%) visual changes, and 36 (56%) hypopituitarism. A review of the literature suggests that diabetes insipidus is usually the initial symptom in suprasellar germinoma. However, we wish to emphasize the ophthalmologic presentation of this entity, because of ophthalmologic presentation of this entity, because patients in the age group most affected (adolescents) will often not recognize symptoms of diabetes insipidus, but will first seek medical attention for painless progressive loss of vision suggestive of chiasmal compression. The radiosensitivity of this lesion is also discussed. Of 61 patients receiving irradiation therapy, 42 (68%) were surviving at the time of their individual case report. No patient in the review survived without irradiation therapy.

Adult↗
PubMedDate not supplied

Refractive keratotomy in keratoconus suspects.

BACKGROUND: We utilized videokeratography to determine the frequency of keratoconus suspects in a refractive surgery population, and compared the results of refractive keratotomy in these patients to those of patients with normal corneal topography. METHODS: The records of 67 consecutive patients (120 eyes) undergoing refractive keratotomy were reviewed retrospectively. Quantitative measurements of relative inferior corneal steepening (inferior-superior value, I-S value) were obtained from preoperative videokeratography. RESULTS: Three of 120 eyes (3 of 67 patients, 4.5%) were identified as keratoconus suspects based on I-S (inferior-superior) values greater than +1.74 (range, +1.76 to +2.00), which represented two standard deviations (+/- 0.66) above the mean (+0.42). All three of these eyes achieved postoperative uncorrected visual acuity of 20/30 or better. Of those eyes with normal preoperative topography (I-S value +1.74 or less), 90 of 112 (80%) achieved postoperative uncorrected visual acuity of 20/30 or better, and 105 of 112 (94%) achieved 20/40 or better. CONCLUSIONS: Although long-term follow up is needed to confirm stability of refractive surgery outcome, it appears that keratoconus suspects can obtain acceptable results with refractive keratotomy. Studies on larger patient populations using videokeratography are needed to better define keratoconus, keratoconus suspects, and normal variants of corneal topography and to determine how eyes with abnormal topography respond to refractive keratotomy.

Adolescent↗