... elastic and profile, the auxiliary agents for eye surgery, solution into the eyes behind before some depth, easy operation, ... in alcohol, ketone, not ether organic solvents. Its solution, has high charged high concentrations of viscoelastic and osmotic pressure ... homocystein, etc, the coexistence of reducing oxygen free radicals, X-ray, gamma rays χ, ultraviolet and ultrasonic and degradation, It can ...