Can castor oil eye drops improve or dissolve cataracts? Is castor oil or tea tree oil helpful for other eye conditions such as blepharitis or dry eye?

Regarding tea tree oil and blepharitis, I successfully resolved my blepharitis by using TheraTears Sterilid Eyelid Cleanser (a foaming wash) twice a day on my eyelids, lashes and brows. (over the counter product) Gently massage in the foam, and be sure to wait at least 1 minute before rinsing off with warm water. I noticed a tingling when first applying the foam, but after 1 minute the tingling disappeared. I did this morning and evening. Over several weeks, the redness, itching and irritation disappeared. This cleanser contains tea tree oil, which I believe is the active ingredient. I would not apply straight tea tree oil to my eyelids - it would be way too strong and irritating.
I have no financial interest in the company that makes this product and am simply reporting my experience.

I had blepharitis once and ever since then, I've noticed that I sometimes get flaking near the roots of my lashes and occasionally get sensitive eyelids. To deal with this, I use diluted tea tree oil. To do this, I apply a drop of tea tree oil onto a cotton swab, dilute by adding a few drops of distilled water, dab the cotton swab onto a clean tissue to ensure it's not too wet, and carefully run this cotton swab around the lash roots and on the eyelid (if that's irritated; otherwise, I just do the lashes). I avoid getting any in the eyes. I've been doing this routine about twice a week for a couple years and have had no outbreaks of blepharitis or eyelash dandruff or similar issues since then. I've also felt immediate relief when my eyelids have been particularly sensitive, although if my eyelids were sensitive that often, I would visit the eye doctor.

Finally, which castor oil brand have subscribers been using?

I read that castor oil could change the color of your eyes. Is that true?