Is eye floaters an optical problem or neurological or a combination of both?

Hi doctor,

I am a 35 year old male. I have floaters in both eyes which developed after severe eye infection at the age of 28 with the use of welding light. Previously, I received treatment for stress. I had tablet Cipralex (Escitalopram) 10 mg for around 3 years. Currently, I am not on any such medication. While taking Cipralex, I used to get good sleep and my light sensitivity suppressed. I had undergone brain computed tomography (CT) two years and four years ago, both were normal. My magnetic resonance imaging (MRI) and Angio of scalp and brain done this year are also normal. I got meningitis vaccination in 2010 due to gulf visa requirement. I used to get routine eye check up and fundus examination every six months. My eye pressure is maintained at 18/20. In perimetry, there isno glaucoma. I have normal sharp vision of 6/6. I also got optical coherence tomography (OCT) recently to check retina. My problems are light sensitivity and disturbed sleep. The light spot does not go away quickly. I am disturbed with dreams at night andno proper sleep. I have sound intolerance too. I would like to know whether my light sensitivity is a neurological problem or optical issue or a combination of both. My neurologist prescribed Flunarizine and Escitalopram for light sensitivity. I am concerned with these drugs as they are selective serotonin reuptake inhibitor (SSRI). I am bothered about my light and sound sensitivity along with disturbed sleep pattern. Kindly guide me.