We have a flock of 13 hens: 5 black astralorps, 2 partridge rocks, 1 gold laced wynodotte, and 5 cuckoo marans. They are all about 9 1/2 mos old. All were laying well. All look healthy. None have issues running around the yard or any mobility issues or any issues that'd cause you to suspect anything wrong. This is our first time with chickens. Egg production had dropped dramatically over the last couple of months, but we don't have lighting in the coop to extend day length- so I'm sure that's due to length of day/winter slow down. Today while doing some chores in the coop, I noticed two of our australorps had a white milky looking substance in the corner of their eye. None of the other hens have this and I don't see any other issues. Doesn't appear to be any swelling. They can obviously see well and are very active. They are still laying. I haven't seen this before and am concerned. I searched and was unable to find this issue. I've attached a couple of pics. Any idea what this is? How do I treat it (do I need to?)? Is it contagious? Will my other hens be affected by it? I assume there is not any issue consuming eggs from the hen while this is happening? What causes this? Anything else I should know about it? So thankful and appreciative of this forum and its members. Thanks in advance for your help!