Hello,
I hope you are well. I think I am able to help with your website. I don't think a large amount of work is needed: my main improvement would be to suggest increasing the space for the lens selections so that it is easier on the eye. I would also recommend removing the text from the images, and moving it to below the selection. In many cases, I think the pictures can be removed altogether as the text is descriptive enough.
Many thanks for reading,
Owen