In a Prospective study, 1200 patient were randomly selected to study the effect of a New drug. The drug will be given for 5 years and its association with cataract will be studied. What type of study is this?

If you are giving a drug so it is a experimental study or trial If we have a comparison group in which you give some other drug or placebo then also it is randomized clinical trial Hea of RCT- Randomization ( applied while allocating them or dividing them into reference group.) Equal & known chance is present.