This book presents in vivo captured high-magnification images of two conditions: keratoconjunctivitis sicca (KCS, or dry eye), an extremely common disease of the ocular surface, and filamentary keratopathy, a relatively rare phenomenon most commonly associated with KCS. The images of KCS represent the broad spectrum of ocular surface changes seen in the condition while the images of filamentary keratopathy clearly reveal the components of the ocular surface appendices, termed filaments. The photographs show phenomena captured in various illumination modes, without staining and after staining...