What is the reason for my eye redness when I wear my contact lens too late at night?

Many possibilities. Poor fit, dryness, irritation from preservatives in your cleaning solution, buildup of protein deposits on the lens itself are all common possibilities. Although some contacts are approved for long-term/overnight wear, I believe the healthiest options are to never wear overnight, and consider daily disposable lenses (so that you are always putting in a clean, fresh, preserve.-free lens each day).

Related Questions

I wear contact lenses and often suffer from itching and red eye. What is going on?

Probably allergy. Sounds like you could be allergic. It could be due to solutions, the lenses (giant papillary conjunctivitis) or even unrelated to both. I would check with your eye doctor on this.
Allergy. It sounds like an allergic reaction. Please consult your doctor for a different contact lens material or solution. You may want to use preservative free contact lens solution and daily contact lenses are less problematic and better tolerated.

Is it normal to have red eye and painful feeling when you are wearing bandage contact lens?

Yes. If you are wearing the lens because you have a corneal problem, this can be normal until the cornea clears up. I would have your eye doctor check to make sure the fit of the lens is good because this can cause discomfort and eye redness as well.
Probably. The redness and pain is probably the results of the injury or infection that made the bandage lens necessary in the first place.

How to get rid of eye redness after taking out contact lenses?

Contact lensoverwear. If your eyes are continually red after contact lens wear I would recommend consulting your optometrist or ophthalmologist to make sure you are not developing corneal hypoxia or contact lens overwear before addressing the redness.

What are good red eye drops that work with soft contact lens?

None. Red eyes with contact lens use are a symptom of an underlying problem. If your eyes always get red with lens use, see your ophthalmologist. Chronic vasoconstrictive drops can be problematic making your eyes even redder over the long run.
Depends. If the issue is only dryness causing eye redness, any over the counter lubricating drop would help (do not use the ones that say 'gets the red out'). These are all compatible with contact lenses. Be sure the redness is not due to allergy, infection or internal eye inflammation. Your ophthalmologist can help if the redness is persistent.