You are exactly right in your thinking. Different drops are used to dilate eyes. Tropicamide (mydriacyl) is the most common drop and it comes in two strengths, % and %. The % will not last quite as long but it is not a large difference. Tropicamide will dilate the eyes and interfere with near focusing. Phenylephrine is often added as a second drop with mydriacyl to enhance the dilation. Phenylephrine enlarges and hastens the dilation but has no effect on focusing and usually does not prolong the dilation. Paremyd is another drop containing % hydroxyamphetamine and % tropicamide. It does not dilate the eyes as well but tends to last a shorter time period and not interfere with near focusing as much. Longer lasting drops include cyclopentolate and homatropine. They have a longer mode of action and exert significantly more interference with close vision. They are usually used for children.
Although it’s not entirely clear how lanosterol is working, the researchers believe that the steroid prevents the proteins from building up. According to Tech Times , if the drops prove to also work on humans, they could offer a non-invasive treatment for individuals with mild to moderate cataracts and serve as a way to prevent the condition from ever returning. While cataract surgery is relatively easy and safe, the drops would serve as an easier alternative for the 50 million Americans estimated to be afflicted by the condition by the year 2050.