hii.. darker under eyes is due to stress
and strain. this occurs due to rupture of the small veins present under the skin in the subcutaneous layer. this can be prevented by reducing the stress of everyday life. and massage
the skin around the lids, this will increase the blood circulation. and can prevent further progression. take tablets Bcomplex with vitaminC once daily for a month with iron tab once daily after food for atleast 3months. still without seeing properly nothing can be cured. so consult an ophthtalmologist for detailed examination. thank you.