| 1 | Safety and effectiveness of the SUPRACOR presbyopic LASIK algorithm on hyperopic patients显示文摘Background:To evaluate the safety and effectiveness of the Supracor excimer laser algorithm to treat hyperopic presbyopic patients using laser in-situ keratomileusis(LASIK).Methods:This is a retrospective case review of patients diagnosed with hyperopia(Sphere≥+0.0 D and presbyopia reading add≥1.0 D)who underwent Supracor excimer laser treatment on at least one eye for presbyopia correction from year May 2011 to May 2013.Binocular vision was further analyzed after patients were subdivided into three groups:Group A(n=22 eyes,11 patients)had Supracor on both eyes;Group B(n=18 eyes,18 patients)had Supracor in one eye and hyperopic LASIK on fellow eye;and Group C(n=29 eyes,29 patients)had Supracor in one eye and no treatment on the fellow eye.Results:This study evaluated 58 patients wherein 69 eyes underwent Supracor presbyopic LASIK.Preoperatively,mean manifest refraction spherical equivalent(MRSE)of all eyes that underwent Supracor was+1.37±0.72 D with mean uncorrected distance visual acuity(UDVA),uncorrected intermediate visual acuity(UIVA),and uncorrected near visual acuity(UNVA)of 20/50(0.35 logMAR),20/50(0.35 logMAR),and J9(0.61 logMAR),respectively.At 6 months postoperatively,mean MRSE was−0.43±0.59 D with mean UDVA,UIVA and UNVA of 20/25(0.13 logMAR),20/20(0.01 logMAR),and J1(0.05 logMAR),respectively.Loss of two lines of best-corrected distance visual acuity(BCDVA)was seen in 6%of eyes.Mean corneal steepening of 1.0 D at the 3 mm zone and 0.7 D in the 5 mm zone was observed.Mean vertical coma increased from−0.02 to+0.10 while mean 4th order spherical aberration became more negative from 0.20 to−0.14.Mean binocular UDVA,UIVA,and UNVA are 20/20,20/20 and J1,respectively,in all treatment groups at the 6 month postoperative follow-up.No significant differences in binocular UDVA(p≥0.36),UIVA(p≥0.19)and UNVA(p≥0.56)among groups were seen.Conclusions:Supracor excimer laser algorithm is safe and effective for the treatment of presbyopia in hyperopes.Monolateral and bilateral Supracor treatments yielded similarly good binocular vision outcomes. | Robert Edward T.Ang Emerson M.Cruz Alex U.Pisig Maria Luisa Patricia C.Solis Rosalie Mae M.Reyes Gerhard Youssefi | 2016 | Eye and Vision2016，3，1： | 3 |
| 5 | Higher incidence of steroid-induced ocular hypertension in keratoconus显示文摘Background:To compare intraocular pressure(IOP)changes following topical dexamethasone administration for 1 month in keratoconic versus normal eyes.Methods:This is a retrospective,single-center,non-randomized case series evaluation of 350 eyes.Two groups were formed:normal/control Group A(n_(A)=73),eyes that underwent excimer laser photorefractive keratectomy;and keratoconic(KCN)Group B(n_(B)=277),eyes that were subjected to partial laser photorefractive keratectomy combined with collagen cross-linking(The Athens Protocol).All eyes received the same post-operative regimen of topical dexamethasone 0.1%for at least 1 month.Goldmann applanation tonometry IOP readings and central corneal thickness(CCT)measurements were monitored.Cases with induced ocular hypertension(OHT,defined as post-operative IOP higher than 21 mmHg),were identified and correlated to refractive procedure,gender,and corneal thickness.Results:At 4 weeks postoperatively,OHT was noted on 27.4%(20/73 eyes)in Group A,and 43.7%(121/277 eyes)in KCN Group B,(p<0.01).Six months post-operatively(following 5-months of discontinuing topical dexamethasone treatment and commencing treatment of IOP-lowering medications),OHT rate was 1.8%in Group A and 3.9%in the KCN Group B.Conclusion:This study demonstrates a potentially significant pre-disposition of keratoconic eyes to the development of steroid-induced OHT. | Anastasios John Kanellopoulos Emerson M.Cruz Robert Edward T.Ang George Asimellis | 2016 | Eye and Vision2016，3，1： | 0 |
| 7 | Kinetic and morphology study of alginate-vineyard pruning waste biocomposite vs. non modified vineyard pruning waste for dye removal显示文摘In this work a comparative bioadsorption study between a biocomposite consisting of hydrolysed vineyard pruning waste entrapped in calcium alginate spheres and non entrapped vineyard residue was carried out.Results have demonstrated that the biocomposite based on lignocellulose-calcium alginate spheres removed 77.3% of dyes,while non entrapped lignocellulose eliminated only removed 27.8% of colour compounds.The experimental data were fitted to several kinetic models(pseudo-first order,pseudo-second order,Chien–Clayton model,intraparticle diffusion model and Bangham model); being pseudo-second order the kinetic model that better described the adsorption of dyes onto both bioadsorbents.In addition,a morphological study(roughness and shape) of alginate-vineyard biocomposite was established under extreme conditions,observing significant differences between hydrated and dehydrated alginate-vineyard biocomposite.The techniques used to carry out this morphological study consisted of scanning electron microscopy(SEM),perfilometry and 3D surface analysis. | Xanel Vecino Rosa Devesa-Rey Salvador Villagrasa Jose M.Cruz Ana B.Moldes | 2015 | Journal of Environmental Sciences2015，27，12： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员