Search

The treatment of refractory Glaucoma is a difficult problem in clinical ophthalmology. For refractory glaucoma patients with hyphema, shallow anterior chamber, anterior conglutination of peripheral chamber angle, corneal endothelium dystrophy or decompensated, at present, there is no effective treatment. In order to solve this problem, a new type posterior integral glaucoma valve with IOP control device was designed using medical titanium alloy, and the valve model was established by Abaqus software, and the stiffness and preload of the valve were analyzed by finite element method. The results showed that the opening and closing of the valve were controlled automatically by the pressure difference between the front and back of the valve, and the opening and flow rate of the valve increase dynamically with the increase of intraocular pressure, and finally reached the set ideal IOP value of steady state.

Objective: To observe the efficacy and feasibility of a new therapy using a combination of different anticholinergic eyedrops in controlling myopia progression and axial prolongation in adolescents. Methods: Between July 2013 and June 2014, a total of 150 myopia adolescents aged 6-12 years were recruited at the clinic of Tongji Hospital in Shanghai. Participants were assigned in a 1∶2∶2 ratio to placebo group (no medication), combined treatment group (0.5% racanisodamine eyedrops were used twice a day during semesters, 1% atropine eyedrops were used before sleep during vacation) and atropine group (1% atropine eyedrops were used before sleep everyday). All subjects wore glasses. Visual acuity, best corrected visual acuity, cycloplegic refraction, corneal curvature, axial length, intraocular pressure, fundus and adverse events were recorded every 6 months during follow-up for 24 months. Results: At baseline, there was no significant difference in age,equivalent spherical mirror number and axial length among the three groups (all P> 0.05). At the end of the second year,the mean myopia progression (changes of spherical equivalent) was -2.34 (-2.93,-1.75) D,-0.63 (-1.00,-0.50) D and -0.25 (-0.50,-0.06) D in placebo group, combined treatment group and atropine group, respectively ( P< 0.001), and there was statistically significant difference between each two groups (all P< 0.001). The axial length change of each group were (1.51±0.23) mm, (0.69±0.30) mm and (0.31±0.30) mm, respectively ( P< 0.001), and there was statistically significant difference between each two groups (all P< 0.001). Conclusion: Therapy using a combination of different anticholinergic eyedrops can effectively control the progression of myopia and axial prolongation in adolescents, and increase the compliance of children and the safety of drug use.

The principal purpose of this study is to set up efficient purification techniques of small DNAs which are suitable for isolation of from tens to three hundred bases of genes. On the bases of the technique, purification methods for big DNA fragments are established. In the experiment, the DNA bands were cut after agarose gel electrophoresis and put into 0.5 mL of tubes with silica wool, glass wood, absorbent cotton and cotton at the bottom. And then 10 000 r/min for 2 min, the liquid was collected. The results indicated that silica wool was the best of the materials. The recovery rate for DNAs below 200bp was over 90%, 85% to approximately 90% for 300bp. And the technique can be applied to purify bigger DNA fragments. The kits for DNA purification hardly recovered DNA below 150bp. The recovery rate for 150bp of DNA was 5%, 60% even for 300bp. The efficiencies of enzymic digestion and enzymic connection for the DNAs purified by the technique were the same as those for the DNAs isolated by the kits. So, the technique is obviously superior to kit purification methods.

By examining the lymphocytic chromosomes of peripheral blood from patients with amenorrhea, spontaneous abortion and stillbirth history, .the 16 rare species of human chromosomal abnormal karyotypes were discovered. They were 46,XY,t(6;11)(q25;p15);46,XY,inv(3)(p25;q29);46,XY,t(7;18)(q10;p10);46,X,t(X;13)(q24;q14);46,XY,t(4;7)(q33;q22);46,XY,t(8;15)(q24;q15);46,XY,t(2;17)(q33;q25);46,XX,t(4;7)(q34;q11);46,XX,t(1;3)(p36;p23);46,XX,t(4;6)(q35;p11);46,X,inv(X)(q22;q28);46,XX,t(7;10)(p11;q26);46,XX,t(3;6)(p21;q23);46,XX,t(8;16)(p21;p13);46,XX,t(8;9)(q21;q34);46,XY,t(17;22)(q21;q11). Their clinical situation were described. Discussion on the relationship between the chromosomal aberrations and phenotype effect indicates the importance of chromosome karyotyping in patients with abnormal reproductive history.

We describe a seven-generation large family with talipomanus and talipes, 175 individuals in this family were involved. 32 affected individuals including 18 males and 14 females whose clinical features were different and 1 suspicious male were found. The talipomanus were symmetrical, and varus and valgus were caused by vertical talus. We investigated their living environment, the dietary habit, obstetrical history, physical status, lifespan, and studied cytogenetics and so on. We propose these defects were rare distal arthrogrophy genetic disease.