well optom pay is coming down, and orthoptics is on the up. I don't know if you are male or female, but if you're a man going into orthoptics, jobs are likely to be easier to get, as its a very female dominated career.
orthoptists know a lot more about squints etc. which optometrists generally don't understand (most fail the binocular vision PQE first time).
Erm.. what else??