Hey
You can get products on the market that help condition and strengthen lashes. Some claim to thicken and lengthen lashes, which isn't the case at all, but its designed to help strengthen the hair, which stops it falling out so much, which gives the impression of thicker lashes.
You can get it online or at price line, google lash serum, or lash gel. There is one called rapid lash, there is one made through refectocil (lash tinting products)
I have never used them, but some clients at work have (beauty industry). The range from $20 up to $100+
It usually takes 3 - 4 weeks to start noticing a difference. Some are applied like mascara and some like an eye liner.
Something like that might be worth a try?