Coloured halos are seen in all, except –
Causes of coloured halos

Corneal edema
Glaucoma (elevated IOT)
Closed-angle glaucoma
Open-angle glaucoma
Early stages of cataract
Too intense exposure to light (snow blindness)
Vitreous opacities :- hemorrhage, asteroid bodies
Asymmetric placement of intraocular lens
Mucopurulent conjunctivitis
Epiphora
Hypoglycemia
Myopia
Foreign body
Drugs
Corticosteroids
Amiodarone
Digoxin
Chloroquine
OCPs
Cataract
Angle closure glaucoma
Corneal edema
Corneal opacity