Fig. 8. Air pollutants can be soluble in the tear film. First, the tear pH is inclined to be acidic by
oxidant. Secondarily, as like the tear lysozyme, the enzymatic system in the aqueous layer
may be disturbed by both irritants and non-irritants. Thirdly, for example, PBzN will be
precipitated into the mucus layer and then can cause the eye irritation and the corneal
epitheliopathy. (The schemata of the tear film shown in Fig. 7, and 8 are quoted from
Holly and Lemp~I»)
Fig. 8. Air pollutants can be soluble in the tear film. First, the tear pH is inclined to be acidic byoxidant. Secondarily, as like the tear lysozyme, the enzymatic system in the aqueous layermay be disturbed by both irritants and non-irritants. Thirdly, for example, PBzN will beprecipitated into the mucus layer and then can cause the eye irritation and the cornealepitheliopathy. (The schemata of the tear film shown in Fig. 7, and 8 are quoted fromHolly and Lemp~I»)
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