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

Table 6

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

Composition HEMA : NVP	Shore-D hardness	Transmittance (%)	Refractive index	Appearance
100∶0	80	90	1.453	Transparent, clear, and hard
90∶10	80	90	1.458	Transparent, clear, and hard
80∶20	80	90	1.465	Transparent, clear, and hard
70∶30	80	90	1.470	Transparent, clear, and hard
60∶40	80	90	1.475	Transparent, clear, and hard
50∶50	80	90	1.486	Transparent, clear, and hard
40∶60	80	90	1.487	Transparent, clear, and hard
30∶70	80	90	1.490	Transparent, clear, and hard
20∶80	80	90	1.491	Transparent, clear, and hard
10∶90	80	90	1.497	Transparent, clear, and hard
0∶100	80	90	1.508	Transparent, clear, and hard