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ANALISI DELLE VARIAZIONI DELLE PROPRIETA’ BIOMECCANICHE DELLA CORNEA 6 MESI DOPO CHIRURGIA RIFRATTIVA
No full textE' NECESSARIO UNA MAGGIORE CAUTELA NELL'USO DI COLLIRI STEROIDEI IN PAZIENTI SOTTOPOSTI A CHIRURGIA RIFRATTIVA?
No full textComparison between Corvis and other tonometers in healthy eyes
No full textPurpose: To determine the agreement of intraocular pressure (IOP) values in healthy eyes among Goldmann applanation tonometer, dynamic contour tonometer, ocular response analyzer and Corvis. Additionally, to study the relationship between their differences with central corneal thickness (CCT) and corneal curvature (CK). Methods: Seventy-six eyes of 76 healthy subjects were examined. Every subject underwent a complete ophthalmic evaluation, a Pentacam scan and three consecutive IOP measurements with each instrument (DCT, GAT, ORA and CST). IOP measurements provided by each device were compared with each other and the differences between them were correlated with morphological parameters obtained by Pentacam (CCT and CK). Statistical analysis was performed using SPSS software, version 18.0. Results: The mean age of enrolled subjects was 36.8. ±. 10.6 years old. The mean IOP measurements that were obtained with GAT, DCT, ORA and CST was 15.62. ±. 2.33. mmHg, 17.44. ±. 2.51. mmHg, 15.99. ±. 3.58. mmHg and 17.24. ±. 3.44. mmHg respectively. The mean CCT was 543.63. ±. 36.15. μm, the mean CK was 43.35. ±. 1.23. D. GAT and ORA provided IOP values not showing a statistical difference; CST and DCT IOP measurements did not show a statistical difference whereas CST provided statistically higher IOP values both than GAT and both ORA. Conclusions: According to our data, CST produces IOP values that are notably higher than GAT measures; therefore they cannot be used interchangeably. If CST should be used as the next gold standard, higher IOP values will come to be considered normal
Intraocular pressure and central corneal thickness study in patients with Steinert Myotonic Dystrophy
No full textSTUDIO DELLE MODIFICHE MORFOLOGICHE DELLA CORNEA DOPO INTERVENTO DI CHIRURGIA RIFRATTIVA LASER MIOPICA
No full textCLINICAL RESULTS OF A NO HISTORY-BASED METHOD IN CALCULATING IOL POWER AFTER CORNEAL REFRACTIVE SURGERY
No full textScleral buckling with chandelier illumination system in rhegmatogenous retinal detachment surgery: a large case series
No full textAIM: To evaluate advantages of chandelier illumination system during scleral buckling (SB) procedures for rhegmatogenous retinal detachment (RRD) surgery. METHODS: In this comparative, retrospective study, data of 72 eyes of 72 patients undergoing SB for RRD at Minerva Hospital (Santa Maria Capua Vetere, Italy), divided in 2 groups of 36 eyes each were collected. In one group (group A) eyes underwent SB with chandelier, in the other one (group B) eyes underwent SB without using chandelier illumination system. Every eye of both groups was checked before surgery and at 1, 3, 7, 14, 30, 90 and 180d follow up. Parameters such as additional procedures, best spectacles visual acuity (BSVA) (measured with Snellen Lines as decimal fraction), surgical time and retinal breaks recurrences had been analyzed before and after surgery and statistical comparison have been run between two groups. RESULTS: A significant (P<0.01) improvement in BSVA was observed at 6mo follow up in both groups; comparing groups A and B, no significant clinical differences was found in recurrences rate whereas mean surgical time in group A was statistically lower than the group B ones. CONCLUSION: According to results observed, even if they need to be confirmed in further studies with larger population, chandelier illumination system could be considered a valuable tool for SB surgery in eyes affected by RRD.AIM: To evaluate advantages of chandelier illumination system during scleral buckling (SB) procedures for rhegmatogenous retinal detachment (RRD) surgery. METHODS: In this comparative, retrospective study, data of 72 eyes of 72 patients undergoing SB for RRD at Minerva Hospital (Santa Maria Capua Vetere, Italy), divided in 2 groups of 36 eyes each were collected. In one group (group A) eyes underwent SB with chandelier, in the other one (group B) eyes underwent SB without using chandelier illumination system. Every eye of both groups was checked before surgery and at 1, 3, 7, 14, 30, 90 and 180d follow up. Parameters such as additional procedures, best spectacles visual acuity (BSVA) (measured with Snellen Lines as decimal fraction), surgical time and retinal breaks recurrences had been analyzed before and after surgery and statistical comparison have been run between two groups. RESULTS: A significant (P<0.01) improvement in BSVA was observed at 6mo follow up in both groups; comparing groups A and B, no significant clinical differences was found in recurrences rate whereas mean surgical time in group A was statistically lower than the group B ones. CONCLUSION: According to results observed, even if they need to be confirmed in further studies with larger population, chandelier illumination system could be considered a valuable tool for SB surgery in eyes affected by RRD
Evaluation of corneal deformation analyzed with a Scheimpflug based device
No full textPurpose: To evaluate the correlation between corneal biomechanical and morphological data in healthy eyes. Methods: A complete clinical eye examination of naïve eyes was followed by tomographic (Pentacam, Oculus, Wetzlar, Germany) and biomechanical (Corvis ST, Oculus, Wetzlar, Germany) evaluation. Linear regression between central corneal thickness (CCT), corneal volume (CV) and anterior corneal curvature measured with Sim'K (SK), versus corneal deformation parameters measured with Corvis ST have been run using SPSS software version 18.0. Results: Seventy-six eyes of 76 healthy subjects (44 women and 32 men) with a mean age of 36.84±10.74 years and a mean refractive error of -0.55±1.68D (measured as spherical equivalent) were evaluated. Corneal deformation parameters were weakly correlated with corneal morphological parameters and with spherical equivalent. Although the correlations between deformation amplitude versus SK and between SK versus Velocity of Applanation 2, were higher than the others (R2=0.28 and 0.26 respectively), none of them was statistically significant (p>0.01). Conclusions: According with these findings, Corvis ST seems to be able to provide an analysis of corneal deformation independent from corneal morphological characteristics. If these data will be confirmed in further studies, this device could be useful in the management and screening of eyes with corneal diseases
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