22 research outputs found
Nuove agnizioni per il Gallo cedrone di Montale
No full textL'articolo propone nuove fonti (da Foscolo, d'Annunzio e Linati) utili alla comprensione e all'esegesi di uno dei testi pià ermetici della "Bufera e altro" di Montale, "Il gallo cedrone". In particolare, tale analisi consente di confermare la stabile presenza del riferimento dannunziano nella terza raccolta del poeta ligure
Validity and limitations of the Nidek NT-4000 non-contact tonometer: a clinical study
No full textUsing Goldmann applanation tonometry (GAT) as a gold standard, we evaluated the accuracy of Nidek NT-4000 pneumotonometry (NPT) in adults without corneal disease. Bland and Altman analysis of serial intra-ocular pressures (IOPs) measured with NPT and GAT in 10 healthy subjects revealed that the repeatability coefficients for the two methods were similar. NPT, GAT and ultrasonic pachymetry were then performed in 100 patients. Bland and Altman analysis showed that NPT yielded significantly higher readings than GAT [mean biases for right and left eye measurements were 1.37 mmHg (95% limits of agreement: -3.02-5.76) and 1.17 mmHg (95% limits of agreement: -2.76-5.11) respectively] and was more affected by corneal thickness variations. For detection of IOPs > or =21 mmHg, NPT displayed very high sensitivity (0.90) and good specificity (0.95). NPT may be useful in screening and clinical settings but borderline-high IOP readings should be confirmed with GAT
Prevalence of blindness and low vision in an Italian population. A comparison with other European studies
No full textEpidemiology of primary glaucoma: prevalence, incidence, and blinding effects
No full textCertain general conclusions can be drawn from a series of 56 studies on glaucoma prevalence. Even in the most recently published studies the rate of undiagnosed glaucoma is particularly high. Another fairly constant finding is the discrepancy between the clinical and epidemiologic diagnoses of glaucoma. The prevalence of primary open-angle glaucoma (POAG) has been increasing, and this trend is undoubtedly due at least in part to advances in diagnostic technology. The decreasing prevalence of primary angle-closure glaucoma (PACG) is due to the adoption of more stringent criteria for the diagnosis of this form of glaucoma. Prevalence increases proportionately with age for each racial group. African or African origin populations had the highest POAG prevalence at all ages but the increase in prevalence of POAG is steeper for white populations. PACG is commonest in Asian ethnic groups, with the exception of the Japanese. Low-tension glaucoma (LTG) is quite common in the Japanese population. Over 80% of those with PACG live in Asia, while POAG disproportionately affects those of African derivation. Women are more affected by glaucoma. Very few incidence studies have been completed, because the cost of examining large samples is high. There are only two recent studies conducted on persons of African descent in Barbados (West Indies) and on white inhabitants of Rotterdam (Netherlands). Risk of incident glaucoma was highest among persons classified as having suspect POAG at baseline, followed by those with ocular hypertension. No difference in incidence of POAG between men and women was found. The more recent studies which included routine visual-field testing reveal rates of blinding glaucoma <10% in many countries, including those that are developing
Compassionate use of intravitreal pegaptanib in patients with age-related macular degeneration
No full textThe study aim was to evaluate the short-term safety and efficacy of pegaptanib sodium injections (Macugen, Eyetech Pharmaceuticals, Inc., New York, NY) in the compassionate-use therapy of choroidal neovascularization (CNV) secondary to age-related macular degeneration (AMD). Intravitreal pegaptanib was used to treat 41 eyes in 40 patients with CNV. Injections were given every 6 weeks, and a minimum of three injections were planned. The mean change in BCVA for all lesions was a loss of 0.03 Snellen lines. Seven eyes (17.1%) gained more than 3 lines, three (7.31%) lost 6 lines or more, and in 75.6% the BCVA stabilized or improved
Nationwide incidence of endophthalmitis among the general population and the subjects at risk of endophthalmitis in Italy
No full textTo investigate the incidence of endophthalmitis in Italy
Age-specific changes in the prevalence of best-corrected visual impairment in an italian population
No full textTo investigate changes in the prevalence of visual impairment in an Italian population from 1988 to 2000
The ophthalmologist's role in Chlamydia trachomatis infection
No full textChlamydia Trachomatis (C.T.) most commonly causes cervicitis in women, often without overt symptoms; when untreated, it produces a clinically inapparent but persistent mild infection or an evident salpingitis. Either processes may lead to scarring of the falloppian tubes and fertility problems. A group of 30 women 20-35 years aged has undergone an ophthalmological routine examination; 7 of them presented a chronical follicular conjunctivitis and history of yellow-white cervical discharge, while the remaining 23 had a mild chronical follicular conjunctivitis but not genital symptoms. Each patient has undergone an immunofluorescent test with monoclonal antibody specific for C.T. on the samples collected by genital and conjunctival scraping and cytological evaluation of the above samples with Giemsa staining. 6 out of 7 patients with genital discharge were positive for C.T., one of which even for eye samples too; all eyes samples showed lymphomonocytes and neutrofilic cells in their eye samples. An additional 3 cases negative for C.T. showed this kind of cells in the eye scraping. The preliminary results of this study on mild follicular chronical conjunctivitis suggest that the Ophthalmologist could play an important role in order to make an early diagnosis in genital and eye infection by Chlamydial Trachomatis
Prevalence and incidence of age-related cataract in a population sample from Priverno, Italy. Ophthalmic Epidemiol. 1999 Jun;6(2):95-103.
No full textAbstract
PURPOSE:
To study the prevalence and incidence of age-related cataract in a random population sample from the town of Priverno in the Lazio Region, Italy.
METHODS:
In 1987, 860 people between the ages of 45 and 69 years, already participating in a study on cardiovascular risk factors, underwent an ophthalmological examination. Patients with lens opacities, assessed by a clinical biomicroscopy and a best-corrected VA equal to or worse than 0.2 LogMar (20/30), were defined as age-related cataract cases. Of the 828 patients without age-related cataract at the baseline, 602 were re-examined in 1994. The 7-year Cumulative Incidence was calculated in three ways, as follows: - referring to the baseline sample without age-related cataract; - referring to the follow-up sample without age-related cataract at baseline; and - adjusted for non-response to the follow-up.
RESULTS:
In the baseline sample, the prevalence of age-related cataract was 3.7% (2.7%-5.2%, 95% C.I.). Cumulative Incidence referring to the baseline sample was 6.5% (4. 8%-8.2%, 95% C.I.); Cumulative Incidence referring to the follow-up sample was 9.0% (6.7%-11.3%, 95% C.I.). Adjusted Cumulative Incidence of age-related cataract was 7.6% (5.6%-9.5%, 95% C.I.).
CONCLUSIONS:
The study suggests that, in the Priverno sample, aging, but not gender, is a very important risk factor for cataract. The authors conclude that more information is needed on incidence of age-related cataract needing surgical rehabilitation and on risk factors causing both progression of lens opacities and visual loss
Age-specific changes in the prevalence and management of optically correctable visual impairment between 1988 and 2000: the Ponza Eye Study
No full textTo obtain age-specific data on changes in the prevalence and management of optically correctable visual impairments (OCVIs) in Ponza, Italy
