Search

As the aging population poses serious challenges to families and societies, the issue of dementia has also received increasing attention. Dementia detection often requires a series of complex tests and lengthy questionnaires, which are time-consuming. In order to solve this problem, this article aims at the diagnosis method of questionnaire survey, hoping to establish a diagnosis model to help doctors make a diagnosis through machine learning method, and use feature selection method to select important questions to reduce the number of questions in the questionnaire, so as to reduce medical and time costs. In this article, Clinical Dementia Rating (CDR) is used as the data source, and various methods are used for modeling and feature selection, so as to combine similar attributes in the data set, reduce the categories, and finally use the confusion matrix to judge the effect. The experimental results show that the model established by the bagging method has the best effect, and the accuracy rate can reach 80% of the true diagnosis rate; in terms of feature selection, the principal component analysis (PCA) has the best effect compared with other methods.

Glaucoma is the second major causes of blindness after cataract. The conventional trabeculectomy and shunt implantation is still the most common surgical procedure in treatment of glaucoma. However, the limitations of the treatments are the security and failure rate. Micro-invasive glaucoma surgery(MIGS)is an emerging category which shares the following five characteristics compared with traditional glaucoma surgery:(1)an interno microincision,(2)micro-invasion,(3)definite curative effect,(4)high safety, and(5)rapid recovery. moreover, it can also reduce the use of glaucoma medication after operation. This kind of surgery can be conducted in three different space, such as Schlemm canal, the suprachoroidal space, and the subconjunctival space. This article reviews briefly the new techniques of micro-invasive glaucoma surgery.

AIM:To observe the protective effect of calcium dobesilate on optic nerve of glaucoma patients whose intraocular pressure has been under control through operation.METHODS: A total of 78 inpatients(89 eyes)with glaucoma in this hospital from January, 2011 to February, 2012 were enrolled. All patients were randomly divided into treatment group and control group with 6 months in a course. The visual acuity, visual field(mean sensibility, MS), and intraocular pressure were measured at the experiment onset and 6 months later to evaluate the clinical effect.RESULTS: There were no statistically significant differences in the visual acuity, intraocular pressure between the two groups neither at the experiment onset nor after 6 months(P>0.05). The mean sensibility(MS)of the treatment group was obviously improved(14.56±5.03 vs 18.9±5.77, Pvs 13.48±4.69). There are statistically significant difference between the treatment group and the control group. Compared to the ratio of improvement, stability, and deterioration in the control group(10.3%, 48.7%, 41.0%), the indexes were changed obviously in the treatment group(64.1%, 28.2%, 7.7%,PCONCLUSION:Calcium dobesilate can improve mean retinal sensitivity and protect the optic nerve in glaucoma patients whose intraocular pressure has been controlled.

AIM: To explore the application feasibility of problem-based learning(PBL)teaching mode in ophthalmology class in medical colleges of China.METHODS: Totally 157 students of class 2009 in Yangtze University majoring in clinical medicine were surveyed by questionnaires.RESULTS: The survey showed that 77.9% of students thought that traditional teaching methods of ophthalmology classes were quite satisfying. 82.8% of them considered it necessary to introduce the new teaching mode. 83.4% of them would choose PBL teaching mode between the traditional teaching mode and PBL teaching mode. 56.6% of them thought that PBL teaching mode was conducive to students' self-learning ability. The subjective and objective conditions made the exploration of PBL teaching modes feasible. However, there were disadvantages of PBL teaching mode. 73.1% of students thought the school teaching facilities were not enough, 78.6% of students thought that only part of the content of ophthalmology teaching was suitable for using PBL teaching mode.CONCLUSION: PBL teaching mode should be continuously explored and studied in the future ophthalmology teaching, in order to create suitable for China's national conditions of ophthalmology teaching mode.