Table 1. Physical properties of nanoparticles used for intravitreous implantation.

Material	Type	Wettability	Degradable	Size nm
Buffered Salt Solution	Solution	Aqueous solution	NA	NA
Poly (l-lactic) Acid	Polymeric	Hydrophobic	Yes	143
Polystyrene	Polymeric	Hydrophobic	No	100
Hyaluronic Acid	Polymeric	Hydrophilic	Yes	200
Poly N-isopropyl acrylamide	Polymeric Hydrogel	Hydrophilic	No	100