Ophthalmology Subretinal demarcation lines (The water marks) indicate: A Fresh rhegmatogenous retinal detachment B Old rhegmatogenous retinal detachment C Retinopathy of prematurity D Retinitis pigmentosa 💡 Explanation Subretinal demarcation lines (The water marks) indicate: ✓ Correct Answer: B. Old rhegmatogenous retinal detachment