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Biomedical subjects

F Bandello

Publications and source records attributed to F Bandello.

67 records · Page 4Linked to original sources

Iris fluorescein angiography in clinical practice.

Iris fluorescein angiography is a valuable technique for elucidating a wide range of eye pathologies, among them developmental anomalies, degenerative disease, retinal vascular occlusions, diabetic microangiopathy, uveitis of various etiologies, glaucoma, tumor, and surgical or accidental trauma. In fact, IFA is more sensitive than biomicroscopy in the evaluation of iris abnormalities. Moreover, it provides indirect but reliable information on the retinal circulation when this cannot be examined directly. Some of the most important clinical applications involve the early detection of iris new vessels, cataract management in diabetic patients, and monitoring of iris tumors. Equipment, procedures, and fluorescein angiography patterns in normal and disease states are described and extensively illustrated. More widespread use of this valuable technique is encouraged.

Animals↗

Idiopathic multiple serous detachments of the retinal pigment epithelium followed by bilateral central serous chorioretinopathy: a case report.

An uncommon case of a 25-year-old woman affected by bilateral idiopathic multiple serous detachments of the macular retinal pigment epithelium is described. During the fluorescein angiography follow-up, in either macular area one of these detachments resulted in a typical central serous chorioretinopathy active leakage point. These findings detail that idiopathic serous detachments of the retinal pigment epithelium may represent predisposing changes for the development of macular neurosensory retinal detachment.

Adult↗

Bilateral central serous chorioretinopathy in a patient treated with systemic cortico-steroids for non-Hodgkin lymphoma.

PURPOSE: To describe the concomitant occurrence of systemic cortico-steroid treatment and the development of bilateral central serous chorioretinopathy (CSC), which promptly regressed after the reduction of the drug dosage, up to its scheduled withdrawal. METHODS: Case report. RESULTS: A 46-year-old white male, with a history of monolateral CSC, had a non-Hodgkin lymphoma on his right cheek. Soon after surgical excision of the tumoral lesion, he received a standard post-operative regimen of decreasing intramuscular betamethasone for 25 days, followed by 10 day's withdrawal, then cycles of intravenous cyclophosphamide and vincristine, followed by 7-day oral prednisone, repeated monthly for three months. Fluorescein angiographies at the end of the first oral cortico-steroid cycle and before starting the second, documented the occurrence of bilateral CSC and its regression, which were chronologically related respectively to the cortico-steroid administration and withdrawal. CONCLUSIONS: This case further demonstrates that systemic cortico-steroids can be responsible for the occurrence of CSC. The patient's history should always be checked for any previous CSC episodes. In these subjects, periodical ophthalmoscopic examination is essential to discover early or asymptomatic steroid-related CSC patterns, to prevent complications of the disease.

Antineoplastic Combined Chemotherapy Protocols↗

Management of incontinentia pigmenti: a case of monolateral preretinal fibrovascular proliferations adjacent to snail-track degeneration areas.

PURPOSE: To report a case of monolateral preretinal fibrovascularproliferations in a young adult woman, who had suffered from incontinentia pigmenti (IP) during her first month of life. METHODS: Case report. RESULTS: Circumscribed preretinal fibrovascular proliferations, adjacent to a mid-peripheral area of snail track degeneration, were occasionally diagnosed in the left eye of an asymptomatic 18-year-old white female. Careful ocular examination did not reveal any cause of the monolateral vascular abnormalities observed in the posterior segment. A detailed medical history brought to light that the patient has suffered infantile IP, like four other females in her family. The patient did not present any evident malformation of teeth, nails, skeleton or hair. A cytogenetic linkage study documented a chromosomal aberration in the Xq28 band, which confirmed the diagnosis of familial IP (type 2). The fluorescein angiography findings clearly illustrated the minimal retinal involvement in the course of IP. CONCLUSIONS: This case shows that a wide range of etiologies must be considered in patients presenting monolateral preretinal fibrovascular proliferations. To correctly manage these uncommon, inherited or acquired, retinal diseases it is better to do a mid-term follow-up, rather than operate immediately, and this enabled us to observe the natural course of the lesion, while awaiting a definitive diagnosis.

Adolescent↗

Ab-interno trabeculo-canalectomy: surgical approach and histological examination.

PURPOSE: To evaluate, on eye bank eyes, a new surgical approach aimed at removing a quadrant of the trabecular meshwork (TM), with an ab interno approach. METHODS: Gonioscopically controlled ab interno removal of the TM was done with a subretinal forcep on six human bank eyes. Serial histological sections were obtained from the treated and untreated part of each globe to assess the effect of the technique on intraocular tissues. RESULTS: Under the gonioscope, the TM was easily removed in strings of varying length. Histological examination showed, unexpectedly, that this resulted in a well-defined deep furrow in the middle of the trabecular region involving both the TM and the inner wall of Schlemm's canal. The operation created a direct communication between the anterior chamber and Schlemm's canal lumen without any evident damage to the outer canal wall and adjacent ocular structures such as the iris base and corneal endothelium. CONCLUSIONS: Our small series on human bank eyes showed that the procedure involves both the TM and the inner wall of Schlemm's canal and is therefore called ab interno trabeculocanalectomy (AITC). The intraoperative findings and the histological evidence are encouraging, and suggest that the procecedure could have potential clinical application.

Cornea↗

Macular thickness measured by optical coherence tomography (OCT) in diabetic patients.

PURPOSE: 1) To compare macular thickness (MT) by optical coherence tomography (OCT) in diabetics and controls; 2) to assess the relationship between MT and stage of diabetic retinopathy (DR) and macular edema (ME); 3) to quantify MT changes after laser treatment for ME. METHODS: One-hundred and thirty-seven patients with diabetes mellitus (216 eyes) were admitted to the study and examined by stereo-color fundus photos, retinal fluorangiography and OCT. DR was classified as: 1) no DR (46 eyes: 21.3%); 2) background DR (66 eyes: 30.6%); 3) pre-proliferative DR (50 eyes: 23.1%); 4) proliferative DR (54 eyes: 25%). The study group was then divided into three ME groups: 1) no edema (65 eyes: 30.1%); 2) not clinically significant ME (no CSME) (45 eyes: 20.8%); 3) clinically significant macular edema (CSME) (106 eyes: 49.1%). Three-month follow-up tomograms were taken to evaluate eyes laser-treated only for ME. The control group consisted of 50 eyes of 50 non-diabetic, age- and sex-matched subjects. RESULTS: MT was 369.3 +/- 163.2 microm in diabetics and 161.9 +/- 12.9 microm in controls (p < 0.001). In the four DR groups it was: 1) 211.0 +/- 37.6 microm; 2) 370.8 +/- 159.6 microm; 3) 419.1 +/- 138.2 microm; 4) 456.1 +/- 162.0 microm (p<0.001). In the three ME groups, MT was: 1)227.8 +/- 53.4 microm; 2) 321.8 +/- 124.2 microm; 3) 476.2 +/-146.6 microm (p < 0.001). In the 52 eyes treated with laser photocoagulation of the posterior pole only and with a follow-up > 3 months, MT before and after treatment was 468.2 +/- 83. 17 microm and 372.1 +/- 120.63 microm. CONCLUSIONS: MT was greater in diabetics than controls and tended to increase with DR and ME severity. OCT is a sensitive technique for detecting early diabetic macular abnormalities and quantifying their reduction after laser treatment.

Diabetes Mellitus, Type 1↗

New findings in the Parry-Romberg syndrome: a case report.

PURPOSE: To describe further findings in the Parry-Romberg syndrome that might contribute towards a better understanding of the disease. DESIGN: Case report. METHODS: The clinical history of a patient with the Parry-Romberg syndrome was studied, and fluorangiography and echography were carried out. RESULTS: Clinical observation revealed classic hemifacial atrophy; fluorescein angiography showed telangiectasis, light staining of the retina, and leakage from the largest telangiectasis and the optic disc vessels; echography showed shrinkage of the eyeball and thinning of the extraocular muscles. CONCLUSIONS: Enophthalmos in this disease is caused not only by progressive fat atrophy but also by shrinkage of the eyeball and thinning of the extraocular muscles; the shrinkage of the eyeball helps explain the presence of choroidal and retinal folding and hyperopia, confirming the primary involvement of connective tissue in this disease.

Child↗

Quality of vision: A consensus building initiative for a new ophthalmologic concept.

PURPOSE: Many studies have addressed the quantification of visual acuity, and the conventional method of measuring it has so far demonstrated serious limitations. Vision testing requires new methods that can more precisely express the quality of vision as perceived by the patient. METHODS: This study employed the Delphi method of consensus building. Concepts associated with quality of vision (QoV) were identified by a board of experts and proposed to participating specialists in two subsequent questionnaires. Upon receipt of the completed questionnaires, the replies were classified to determine the building blocks of a consensus. RESULTS: By analyzing the replies to the two questionnaires, the authors determined the key elements of QoV on which a consensus was found among the respondents. CONCLUSIONS: A consensus was reached on the opinion that the quantification of visual acuity by traditional means is inadequate for investigating QoV. Although visual acuity is still a basic element for testing, the experts believe that contrast sensitivity, reading speed, and microperimetry are additional parameters necessary for quantifying QoV. The use of a psychometric questionnaire on visual function could allow a better interpretation of visual impairment.

Consensus↗

Diabetic retinopathy: are we really doing all we can for our patients?

Although it is now possible to significantly reduce the incidence of blindness secondary to diabetes mellitus, large numbers of diabetic patients still experience visual loss due to retinal complications of the disease. This implies that protocols for the diagnosis and treatment of diabetic retinopathy used in the various multicenter trials have not yet been transferred into routine clinical practice. In countries where ocular complications of diabetes have been managed on the basis of well-codified protocols for several years, the incidence of visual loss among diabetic patients has been significantly reduced. It is absolutely essential to introduce screening and treatment protocols for diabetic retinopathy promptly everywhere. Their application is within the reach of every ophthalmologist. Patients must be informed that it is important to have regular full ophthalmological examinations, before any symptoms occur; the guidelines for screening and management of retinopathy must be known and accepted by the medical community. Spreading this information among primary care physicians, ophthalmologists and diabetologists is a fundamental step in improving the health care of the diabetic patient.

Clinical Protocols↗

Recurrent central retinal vein occlusion in a young thrombophilic patient with factor V Leiden mutation.

PURPOSE: To investigate the cause of recurrent central retinal vein occlusion in a 26-year-old white woman. METHODS: Case report. Complete blood analyses were done, including HLA tissue typing, immunoserologic and coagulation tests, with cardiovascular and capillaroscopy investigations. Factor V:R506Q and prothrombin 20210 GIA mutations were checked by polymerase chain reaction and restriction enzyme analysis. RESULTS: DNA analysis showed the patient to be heterozygous for factor V:R506Q mutation. During a follow-up of 18-months, after starting anticoagulant therapy, the patient had not suffered from any other ocular or systemic occlusive vascular accident. CONCLUSIONS: The R506Q factor V gene mutation may be associated with recurrent central retinal vein occlusions. Genetic investigation should be promptly recommended in thrombotic patients to establish a specific preventive treatment.

Adult↗

Selective photocoagulation in Coats' disease: ten-year follow-up.

PURPOSE: The diagnostic hallmark of Coats' disease is development of "light bulb" telangiectasis in the retinal periphery, leading to posterior pole intraretinal and subretinal exudation. Even after complete obliteration of all abnormal vessels and resorption of all exudates, follow-up examinations are mandatory for several years. METHODS: We retrospectively analyzed the charts, pictures and/or fluorescein angiographies of a series of 32 consecutive patients, in which the diagnosis of Coats' disease was made. All patients underwent selective photocoagulation of the telangiectasis using a yellow-dye laser. Efficacy of treatment was monitored with drawings and/or fluorescein angiographies. RESULTS: All our patients had unilateral disease, with macular involvement and exudative retinal detachment. Visual acuity improved in one patient, decreased from light perception to blindness in another, and was unchanged in the remainder. CONCLUSIONS: This is the first report of anatomical benefits from treatment with a yellow-dye laser (i.e., selective photocoagulation without cryotherapy or drainage) despite the presence of a severe form of Coats' disease. Our young Coats' patients responded quickly to treatment. With successful obliteration of the abnormal vasculature, exudates began to absorb in about 4 to 8 weeks although, in some cases, 10 to 12 months were needed to obtain resolution of the exudative detachment. Poor visual outcome of 20/100 or worse was common. In Coats' patients, the key issue is continuous control and long-term follow-up.

Child↗