10 week old kitten eye problem

[Charx74]

Hello all
I'm worried about my beautiful 10 week old kitten, she acts healthy, eats very well, runs around and plays. She had a slight eye infection which the vet said to keep an eye on when she went for her 1st set of vaccinations last week (2nd ones are due in 2 weeks) the eye is no longer gunky but it has developed a whitish/cloudy mark on it over the last couple of days
She seems to be able to see properly,for example she can follow/chase a lazer pen
Ive attached a photo where you can clearly see the mark

She's going to the vets in 2 weeks anyway for her next vaccinations but considering taking her asap as I'm worried! Any ideas what it can be?