Titan Eye Plus is a very well known eye wear brand manufacturing spectacles, contact lenses and sunglasses.
I personally visited their kolkata showroom last month. I bough one pair of rimless spectacle frame and even ordered for the lenses . I ordered poly carbonate lenses as Titan had replacement guaranty on them .If they ever broke within two years then Titan promised to replace them for free.Unfortunately I dropped my spectacles one month after and broke one of the two lenses.When I claimed the replacement they stated that they had short supply of that type of lens and they could not give me the replacement.Therefore I do not recommend this brand at all.