A 25 year old male presents withpainless sudden loss of vision, ocular and systemic examination is not contributory. What is probable diagnosis:

B i.e. Eale's disease Glucoma presents with painful sudden (acute congestive / angle closure glucoma) or gradual (chronic simple glucoma) loss of vision. And cataract presents with gradual painless loss of vision. Retinal detachment and Eale's disease both can present with sudden painless loss of vision. Eale's disease is a bilateral disease usually seen in healthy young adults (20-30 years) and presents with recurrent vitreous haemorrhage causing sudden appearance of floatersQ. Opthalmic signs include thickening, touosity, congestion and perivascular sheathing of peripheral retinal veins with retinal & vitreous haemorrhage. Whereas RD usually occurs in patients with previous ocular or systemic disease and presents with more prominent ocular signs like low IOP, detached retina, retinal breaks, shifting of fluid, tobacco dust or Shaffer sign (pigmented anterior vitreous) and RAPD (Marcus Gunn pupil) etc.