Vivi, it's possible that your turt's problems are related to the new light. I assume it's a compact flourescent UVB? What type specifically do you use? Several people on the forum have had turtles with irritated or swollen eyes after switching to certain compact flourescent UVB bulbs. If that's the problem, you can try turning the UVB light off for a few days (keep using the heat light). See if the turtle comes around. You can also use turtle eye drops from the pet store - they help. To fix it permanently you can move the light further back from the basking platform. If you're using a fixture with a reflective interior, switch it to one with a matt interior.
HOWEVER.....lots of other things besides a UVB bulb can cause swollen turtle eyes. Dirty water, injuries, vitamin deficiencies, too much chlorine in the water, and too much conditioner in the water are all possible causes. Also, swollen eyes is one of the most common symptoms of a very serious problem - respiratory infection.
So....hopefully your turtle's problem is just the new UVB bulb and you can fix it easily. But if there are other symptoms of a respiratory infection (RI) you'll have to get him to a vet ASAP. Only a vet with antibiotics can successfully treat an RI.
Other symptoms of RI are: sleepiness, lack of energy, poor appetite, difficulty submerging, swimming lop-sided, mucus or bubbles on the nose, yawning or breathing with the mouth open. Your turtle doesn't have to have all these symptoms, but if he has several you'd better get him to the vet. Keep him warm (around 80 degrees) in the meantime and avoid stressing him out.
Don't force him to eat anything he really doesn't want. Instead, entice him to eat by making the food more attractive to him. What kind of pellets does he eat? Here are some tips on enticing him to eat food that's good for him:
http://www.redearslider.com/entice_eating.html
Good luck. Keep us posted.





