Studies on Development of Polymeric Materials Using Gamma Irradiation for Contact and Intraocular Lenses

Table 3

Properties of polymers obtained with HEMA : MMA by varying ratios.

Composition HEMA : MMA	Shore-D hardness	Transmittance (%)	Refractive index	Appearance
100∶0	80	90	1.453	Transparent, clear, and hard
90∶10	80	90	1.446	Transparent, clear, and hard
80∶20	80	90	1.442	Transparent, clear, and hard
70∶30	80	90	1.439	Transparent, clear, and hard
60∶40	80	90	1.435	Transparent, clear, and hard
50∶50	80	90	1.432	Transparent, clear, and hard
40∶60	80	90	1.428	Transparent, clear, and hard
30∶70	80	90	1.423	Transparent, clear, and hard
20∶80	80	90	1.419	Transparent, clear, and hard
10∶90	80	90	1.415	Transparent, clear, and hard
0∶100	80	90	1.412	Transparent, clear, and hard