A 62-year-old patient presents to the emergency department with the complaint of a sudden onset of 'floaters' in their visual field, accompanied by flashes of light and a sensation of a curtain being drawn over the affected eye. There is no reported pain. Based on the presentation, which of the following is the most likely diagnosis?
Retinal detachment
Cataract formation
Papilledema
Acute angle-closure glaucoma