Objective electrophysiological contrast sensitivity with monofocal and multifocal intraocular lenses:a prospective clinical study

Background:To compare objective electrophysiological contrast sensitivity function(CSF)in patients implanted with either multifocal intraocular lenses(MIOLs)or monofocal intraocular lenses(IOLs)by pattern reversal visual evoked potentials(prVEP)measurements.Methods:Fourty-five cataract patients were randomly allocated to receive bilaterally:apodized diffractive-refractive Alcon Acrysof MIOL(A),full diffractive AMO Tecnis MIOL(B)or monofocal Alcon Acrysof IOL(C).Primary outcomes:1-year differences in objective binocular CSF measured by prVEP with sinusoid grating stimuli of 6 decreasing contrast levels at 6 spatial frequencies.Secondary outcomes:psychophysical CSF measured with VCTS-6500,photopic uncorrected distance(UDVA),and mesopic and photopic uncorrected near and intermediate visual acuities(UNVA and UIVA respectively).Results:Electrophysiological CSF curve had an inverted U-shaped morphology in all groups,with a biphasic pattern in Group B.Group A showed a lower CSF than group B at 4 and 8 cpd,and a lower value than group C at 8 cpd.Psychophysical CSF in group A exhibited a lower value at 12 cpd than group B.Mean photopic and mesopic UNVA and UIVA were worse in monofocal group compared to the multifocal groups.Mesopic UNVA and UIVA were better in group B.Conclusions:Electrophysiological CSF behaves differently depending on the types of multifocal or monofocal IOLs.This may be related to the visual acuity under certain conditions or to IOL characteristics.This objective method might be a potential new tool to investigate on MIOL differences and on subjective device-related quality of vision.

Modified Helicobacter test using a new test meal and a 13C-urea breath test in Helicobacter pylori positive and negative dyspepsia patients on proton pump inhibitors

AIM To determine the sensitivity and specificity of the ^(13)C-urea breath test(UBT) in patients taking proton pump inhibitors(PPIs), using a new test meal Refex. METHODS One hundred and fourteen consecutive patients with dyspepsia, 53 Helicobacter pylori(H. pylori) positive, 49 H. pylori negative, were included in the study. The patients were then given esomeprazole 40 mg for 29 consecutive days, and the ^(13)C-UBT with the new test meal was performed the next morning. RESULTS The sensitivity of the ^(13)C-UBT with a cut off 2.5‰ was92.45%(95%CI: 81.79%-97.91%) by per-protocol(PP) analysis and 78.13 %(95%CI: 66.03%-87.49%) by intention-to-treat(ITT) analysis. The specificity of the ^(13)C-UBT test was 96.00 % in the ITT population(95%CI: 86.29%-99.51%) and 97.96% in the PP population(95%CI: 89.15%-99.95%).CONCLUSION The new test meal based ^(13)C-UBT is highly accurate in patients on PPIs and can be used in those unable to stop their PPI treatment.

A PROSPECTIVE STUDY TO EVALUATE THE SAFETY AND EFFICACY USING REMOVING BLOOD STASIS HERBALS FOR PATIENTS WITH INTRACRANIAL HEMORRHAGE OF HYPERACUTE STAGE AND RELATIVE FACTORS OF HEMATOMA ENLARGEMENT(A MULTICENTER PROSPECTIVE RANDOMIZED DOUBLE-BLIND PLACEBO

The aim was to investigate whether using a removing blood stasis method in hyperacute intracranial hemorrhage stage can lead to hematoma enlargement and its clinical efficacy.A multicenter retrospective randomized double-blind placebo-controlled clinical study.We recruited patients aged 18 years or older and presenting at less than 6 h from symptom onset in 8 research centers.All the patients

Protocol to establish auxiliary diagnostic model for knee osteoarthritis functional testing equipment

In China,50%of Knee Osteoarthritis(KOA)patients will be treated with Traditional Chinese Medicine or a combination of Traditional Chinese and Western Medicine,which call for objective efficacy evaluation methods.The collection,processing and fusion of multisource data were taken as the main methods,with 150 KOA patients and 100 healthy people as an example to design prospective clinical tests.Data were collected with tongue inspection APP,infrared instrument and channel instrument,etc.And the analysis,screening,fusion and modelling of multi-source data were conducted.The traditional clinical tests have been combined with the customized information platform in this study,which is convenient for clinical tests,medical follow-ups and timely feedback to statistical analysis of data.