Table 1
Biophysical properties of the viscoelastic agents
Ocucoat
Viscoat
Content
Hydroxypropyl methylcellulose 2%
Sodium chondroitin sulphate 4%–sodium hyaluronate 3%
Molecular weight (daltons)
90 000
600 000
Viscosity at zero shear rate (cps)
4000
40 000