The presentation by Dr. Sunil K. Parmar covers various conditions related to peripheral or marginal keratitis, including marginal keratitis, phlyctenular keratitis, Moore's ulcer, and several forms of marginal corneal degeneration. It outlines symptoms, underlying hypotheses, treatment options, and associations with autoimmune diseases such as rheumatoid arthritis and systemic lupus erythematosus. Case studies showcase the clinical manifestations and management of these conditions, emphasizing the significance of timely intervention and appropriate therapies.