Final answer:
Lawrence needed to see an ophthalmologist to check the effectiveness of the drugs being used to treat his eye disease.
Step-by-step explanation:
Lawrence needed to see an ophthalmologist to check the effectiveness of the drugs being used to treat his eye disease. An ophthalmologist is a medical doctor who specializes in the diagnosis and treatment of eye diseases. They can perform various tests and examinations to evaluate the effectiveness of the drugs and monitor the progress of the treatment.