目的比较白内障手术患者植入Tecnis ZMB00及Acry Sof Re STOR SN6AD1多焦点人工晶状体(multifocal intraocularlens,MIOL)后光学性能与视觉质量。方法选取2012年3月至2015年7月于我院眼科择期进行白内障手术治疗的患者120例(130眼)。所...目的比较白内障手术患者植入Tecnis ZMB00及Acry Sof Re STOR SN6AD1多焦点人工晶状体(multifocal intraocularlens,MIOL)后光学性能与视觉质量。方法选取2012年3月至2015年7月于我院眼科择期进行白内障手术治疗的患者120例(130眼)。所有患者均采用MIOL植入,并根据MIOL类型分为A组(Tecnis ZMB00组)、B组(AcrySof ReSTOR SN6AD1组),测定患者手术前后裸眼远视力(uncorrect distant visual acuity,UCDVA)、裸眼近视力(uncorrect near visual acuity,UCNVA)、裸眼中距离视力(uncorrecta intermediate vision,UCIVA)、最佳矫正远视力(best correct distant visual acuity,BCDVA)、最佳矫正近视力(best correct near visual acuity,BCNVA),均绘制离焦曲线,作对比敏感度分析,并采用术后视功能与生存质量调查表(VF-14)评定患者术后视觉质量。结果术后1周、1个月、3个月A组UCNVA、UCIVA、BCNVA恢复情况均优于B组(均为P<0.05),术后1周、3个月A组UCDVA恢复情况均优于B组,术后3个月等效球镜屈光度低于B组(P<0.05)。A组暗视、明视炫光、暗视炫光不同频率下对比敏感度均高于B组(均为P<0.05);A组术后3个月VF-14评分低于B组(P<0.05);A组在0.0 D与-2.5 D形成2个波峰,-2.0^-2.5 D形成平台期,B组仅在0.0 D与-3.0 D形成2个波峰。结论白内障手术患者植入Tecnis ZMB00 MIOL可改善患者术眼裸眼视力,提升对比敏感度,改善患者术后视功能及生活质量。展开更多
The different processing of global and local properties of compound visual stimuli was studied with event-related brain potentials (ERPs) in the present experiment. It was found that, compared with the identification ...The different processing of global and local properties of compound visual stimuli was studied with event-related brain potentials (ERPs) in the present experiment. It was found that, compared with the identification of global properties, the discrimination of local properties elicited longer RTs, lower accuracies, increased amplitudes of P1, decreased amplitudes of N1, and longer latencies of N2 and P3. The conflict of global and local properties increased the amplitudes of P2, decreased the amplitudes of P3, and prolonged latencies of N2 and P3. These results indicated that the advantage of global processing occurs at an early perceptual stage, and the attentional mechanisms for global and local processing may be different.展开更多
We developed a fluorescent double network hydrogel with ionic responsiveness and high mechanical properties for visual detection.The nanocomposite hydrogel of laponite and polyacrylamide serves as the first network,wh...We developed a fluorescent double network hydrogel with ionic responsiveness and high mechanical properties for visual detection.The nanocomposite hydrogel of laponite and polyacrylamide serves as the first network,while the ionic cross-linked hydrogel of terbium ions and sodium alginate serves as the second network.The double-network structure,the introduction of nanoparticles and the reversible ionic crosslinked interactions confer high mechanical properties to the hydrogel.Terbium ions are not only used as the ionic cross-linked points,but also used as green emitters to endow hydrogels with fluorescent properties.On the basis of the “antenna effect” of terbium ions and the ion exchange interaction,the fluorescence of the hydrogels can make selective responses to various ions(such as organic acid radical ions,transition metal ions) in aqueous solutions,which enables a convenient strategy for visual detection toward ions.Consequently,the fluorescent double network hydrogel fabricated in this study is promising for use in the field of visual sensor detection.展开更多
Control of locusts traditionally relies on chemical insecticides.However,chemical control had led to serious environment problems,while light trap techniques based on manipulating insect phototactic responses,are prop...Control of locusts traditionally relies on chemical insecticides.However,chemical control had led to serious environment problems,while light trap techniques based on manipulating insect phototactic responses,are proposed to use for plague locusts control.The key to high efficiency of the trap is to decide the photoelectric reaction intensities on the positive phototaxis of insects.The study compared the visual reaction effects of locusts with their phototactic photosensitivity through the use of spectrometry and behavior investigations,to obtain the influences of the visual spectrum characteristics on locusts positive phototaxis.The results showed that the visual absorption of photons of mixed spectral light and the visual glimmer reaction of the locusts with migratory spectrum characteristics of the peak wavelength of LED lights,reflected the degree of the visual photosensitivity to light photons absorbed by the eye.The visual photosensitive response intensity and the phototactic aggregation effect stimulated by violet light were the most effective,showing that violet light of locusts visual trending sensitivity was consistent with the short sensitive spectrum light of insects visual electrophysiology,whereas the timeliness of the visual photosensitivity reaction and the induction effect was superior under orange light,showing that the biological behavior of locusts visual physiology reaction caused by orange light regulating locusts light rhythm was complicated.Moreover,weak light resulted in stronger visuospatial orientation in terms of the phototaxis of locusts and stronger light resulted in the better visual orientation towards the light source.The results indicated that optical wave properties could affect the visual absorption of spectral light photons,which resulted in different visual responses to different optical frequency energies and restricted the visual bio-photosensitive induction activity of locusts.The study provides new understanding of positive and negative phototaxis of locusts and useful da展开更多
基金Project supported by the State Commission of Science and Technology,"863" and the National Natural Science Foundation of China.
文摘The different processing of global and local properties of compound visual stimuli was studied with event-related brain potentials (ERPs) in the present experiment. It was found that, compared with the identification of global properties, the discrimination of local properties elicited longer RTs, lower accuracies, increased amplitudes of P1, decreased amplitudes of N1, and longer latencies of N2 and P3. The conflict of global and local properties increased the amplitudes of P2, decreased the amplitudes of P3, and prolonged latencies of N2 and P3. These results indicated that the advantage of global processing occurs at an early perceptual stage, and the attentional mechanisms for global and local processing may be different.
基金Funded by the National Natural Science Foundation of China(No.51873167)the National Innovation and Entrepreneurship Training Program for College Students(No.226801001)。
文摘We developed a fluorescent double network hydrogel with ionic responsiveness and high mechanical properties for visual detection.The nanocomposite hydrogel of laponite and polyacrylamide serves as the first network,while the ionic cross-linked hydrogel of terbium ions and sodium alginate serves as the second network.The double-network structure,the introduction of nanoparticles and the reversible ionic crosslinked interactions confer high mechanical properties to the hydrogel.Terbium ions are not only used as the ionic cross-linked points,but also used as green emitters to endow hydrogels with fluorescent properties.On the basis of the “antenna effect” of terbium ions and the ion exchange interaction,the fluorescence of the hydrogels can make selective responses to various ions(such as organic acid radical ions,transition metal ions) in aqueous solutions,which enables a convenient strategy for visual detection toward ions.Consequently,the fluorescent double network hydrogel fabricated in this study is promising for use in the field of visual sensor detection.
基金supported by 2012 Public Welfare Industry(Agriculture)Special Funds for Scientific Research Projects(Grant No.201203025)Scientific and Technological Project in Henan Province(Grant No.172102110270)the Landmark Innovation Project of Science and Technology.
文摘Control of locusts traditionally relies on chemical insecticides.However,chemical control had led to serious environment problems,while light trap techniques based on manipulating insect phototactic responses,are proposed to use for plague locusts control.The key to high efficiency of the trap is to decide the photoelectric reaction intensities on the positive phototaxis of insects.The study compared the visual reaction effects of locusts with their phototactic photosensitivity through the use of spectrometry and behavior investigations,to obtain the influences of the visual spectrum characteristics on locusts positive phototaxis.The results showed that the visual absorption of photons of mixed spectral light and the visual glimmer reaction of the locusts with migratory spectrum characteristics of the peak wavelength of LED lights,reflected the degree of the visual photosensitivity to light photons absorbed by the eye.The visual photosensitive response intensity and the phototactic aggregation effect stimulated by violet light were the most effective,showing that violet light of locusts visual trending sensitivity was consistent with the short sensitive spectrum light of insects visual electrophysiology,whereas the timeliness of the visual photosensitivity reaction and the induction effect was superior under orange light,showing that the biological behavior of locusts visual physiology reaction caused by orange light regulating locusts light rhythm was complicated.Moreover,weak light resulted in stronger visuospatial orientation in terms of the phototaxis of locusts and stronger light resulted in the better visual orientation towards the light source.The results indicated that optical wave properties could affect the visual absorption of spectral light photons,which resulted in different visual responses to different optical frequency energies and restricted the visual bio-photosensitive induction activity of locusts.The study provides new understanding of positive and negative phototaxis of locusts and useful da
