<prompt> Acanthamoeba keratitis is: March 2012Allergic reaction to tuberculoproteinSeen in contact lenses usersLesion of herpes zosterSeen in congenital syphilis  <response>: Ans: B i.e. Seen in contact lenses users Keratitis Phylctenular keratitis is an allergic reaction to an endogenous allergen, commonly tuberculoprotein Acanthamoebic keratitis occurrence is frequently associated with wearing of soft contact lenses. It has also been seen to occur in non-contact lens wearers may be related to swimming or bathing in contaminated water Larger discoid lesions of herpes zoster are known as nummular keratitis Interstitial keratitis due to inherited syphilis most commonly affects children between the ages of 5 15 years 