<s>[INST] My son has had herpes simplex viral infection of the eyes for several years (at least 10 years). He has been taking oral acyclovir for several years. He has also tried steroid eyedrops. Should he be having his kidney and liver function tests done? Also, is there any other treatment available? [/INST] Hello, your son is having chronic form of herpes simplex eye infection. The treatment for this condition is acyclovir, and it is given only if persons kidney and liver functions normal. So it is advisable to do kidney function and liver function tests before starting treatment. Take plenty of water during treatment to keep your kidney functioning normal. There are other treatment also but acyclovir has proven benefits in treatment of herpes simplex infection. Take balanced diet to keep your immune system boosted. Hope this helps you. Thank you. </s>