From what I know training for IMAZ (Ironman Arizona) starts August 15th assuming HI (Half Ironman) shape. That's roughly seven weeks away and means I should be able to swim 1.2 mi, bike 56 mi, and run 13.1 mi. But there are hurtles in those seven weeks. August 3rd I'm having surgery on my left eye. I'm having an intact inserted to help with my keratoconus. This surgery means no suitable cycling vision in my left eye for the month of July. Furthermore, the surgery means no swimming in the month of August because the eye needs to heal and is vulnerable to bacteria in the water.
Normal eye top, Keratoconus bottom eye
Based on the above, it appears that in July, and possibly in the month of August I will be bound to cycling on the trainer. This is really bad because though it's a good workout, you're going to lose fitness that only comes from riding outdoors. Also, with only one eye driving is very dangerous. That means I will be highly dependant on my wife's schedule getting me to the gym with two children, a five year old and an eight month old.
So no swimming in August. That I'm not to worried about because I can regain swimming fitness in September and October. Also, I've tried very hard to improve my swimming ability with little luck. So I've just reached the conclusion there is basically no loss by not swimming that extra mile. In the end I'll still be a flounder in water. Cycling is an other matter. Not having proper training in July and August is going to really be hurtful. The only conciliation I have is that if everything goes well my metatarsalgia (aka "Stone Bruise, because it feels like you have a rock in your shoe) will not act up in my right foot and I'll still be trekking on the trails.