Table 2.

Advantages and structural schematics of the main nano-delivery carriers.

Nano-delivery carriers		Advantages	Structure	References
Nanoliposomes		● Small volume ● Excellent biocompatibility ● Longer residence time ● Longer drug half-life		Akbarzadeh et al. (139)
Nanoparticles	Polymeric Nanoparticles	● Biocompatibility ● Biodegradable ● Non-toxic degradation products		Tahara et al. (140)
	Lipid Nanoparticles	● Small volume ● High stability ● Excellent biocompatibility ● Crosses biological barriers ● High and sustained drug release ● Targeted drug delivery		Sharma et al. (141)
Nanoemulsions	o/w Nanoemulsions	● Small volume ● Excellent biocompatibility ● Crosses biological barriers ● Targeted drug delivery		Singh et al. (142)
	w/o Nanoemulsions
Nanogels		Dave et al. (143)
Dendrimers		● High stability ● Improving ocular permeability ● High bioavailability of drugs		Yavuz et al. (144)