Table 11.

Application of HPC, CA, and CAP in ocular drug delivery.

Cellulosic Polymer	Drug Used	Formulation	Application of Polymer	Effect on Drug Property	Ref
HPC	Timolol maleate	Instantly soluble solid eye drops	Increases the ocular residence time of drug	Enhanced corneal residence time by interacting with cornea because of mucoadhesive property of HPC	[129]
CA	Betaxolol hydrochloride	Silicone hydrogel based contact lenses	Sustained release up to 66% in 72 h, prolonged residence time of the drug	Enhanced bioavailability up to 50%, initial high burst release of 24.5 ± 5.2 µg/mL (to achieved therapeutic concentration) than decreased in release up to 1.7 ± 1.0 µg/mL at 6 h (sustained release)	[130]
CAP	Ibuprofen	Nanoparticle particle dispersed gel	Prolonged residence time and control permeation of drug	In vitro drug release was 70% at 8 h	[105]