Yes Retina laser can be painful at times but not always. Since there are different types of lasers required to treat different retinal conditions.\rUsually the level of pain depends on the grade of burn and the location of the lesion lasered. The grade of burn is decided by the treating doctor to acheive complete treatment. Barrage lasers tend to be more painful compared to laser for diabetic retinopathy as the area treated in barrage laser is usually the peripheral retina which is thinner than the rest of retina. Some lasers like focal/grid are absolutely pain free.\rUsually the pain if there is any lasts during or few minutes after the procedure and is easily treatable with simple eye drops and if required pain killer tablets will be prescribed by the treating physician. Sometimes you might be advised to take pain killers before the procedure if pain is anticipated during the procedure by the treating doctor.\rNow the cost of any retina laser depends on the number of sitting required and is again decided by the treating physician. Usually it ranges from 1 to 3 sittings.\rThe per sitting cost of retina laser ranges from 4000 rs to 6000 rs depending on the type of laser. For barrage laser the cost is around 5800rs and for diabetic laser cost is 5500 per sitting per eye. For a focal laser the cost is 4000rs.