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. Author manuscript; available in PMC: 2014 Jul 21.
Published in final edited form as: Ocul Surf. 2009 Oct;7(4):176–185. doi: 10.1016/s1542-0124(12)70185-4

Table 1.

Antioxidants present in the ocular surface

Compartment Antioxidants
Enzymatic Nonenzymatic
Tear film Superoxide dismutases Uric acid
Ascorbic Acid
Glutathione
L-tyrosine
L-cysteine
Cornea Superoxide dismutases
Glutathtione peroxidases
Glutathione reductase
Catalase
Glucose-6-Phosphodehydrogenase
Aldehyde dehydrogenase 3A1
Aldehyde dehydrogenase 1A1		 Ascorbic Acid
Glutathione
NADPH
α-tocopherol
Retinol
Ferritin
Albumin
Aqueous humor Superoxide dismutases Ascorbic Acid
L-tyrosine
Uric Acid
L-cysteine
Glutathione
*

The properties and functions of each antioxidant are discussed in detail in the text.