What are the options available when choosing a cosmesis prosthesis?

Not many. I assume you are concerned about an artificial eye. These are made by ocularists, specialists in this field, who make a plastic matching eye to the normal eye which really in most cases looks amazingly lifelike and the same. The only option is the construction with the insertion of a motility peg - something probably not very useful with some downsides. Discuss this with your surgeon .