Hi: If you don have a Mite problem, it will be an unregulated irrigation .

Although the photo is not of good quality, the symptoms on the skin of the fruit may be associated with mite attack. I suggest to search in the leaves. Mites as Polyphagotarsonemus latus often cause symptoms such other Solanaceae.

View:

http://francescofiume.altervista.org/Eggplant.html

http://www.cropscience.bayer.com/Products-and-Innovation/Crop-Compendium/Pests-Diseases-Weeds/Pests/Polyphagotarsonemus-latus.aspx

http://aciar.gov.au/files/mn-157/pdf/TECCIPM-14-(20Nov13)-insect-mite-pests.pdf

hi problem not fund

I think the problem caused by mite

@ Elaheh Gerami

The symptom seen in the posted picture is caused by pest called thrips.

Thanks!