Sudden painless loss of vision seen in retinal detachment due to:

Ans. (c) Vitreous hemorrhageRef : A.K. Khurana 6th ed. /260-61* Vitreous haemorrhage usually occurs from the retinal vessels and may present as pre-retinal or an intragel haemorrhage.BCAUSESCauses of Vitreous Haemorrhage are as Follows:* Spontaneous vitreous haemorrhage from retinal breaks especially those associated with PVD.* Trauma to eye: blunt or perforating* Inflammatory diseases such as chorioretinitis and periphlebitis* Vascular disorders e.g., hypertensive retinopathy, and centreal retinal vein occlusion.* Metabolic diseases as diabetic retinopathy.* Blood dyscrasias eg: retinopathy of anaemia, leukaemias, polycythemias sickle-cell* NeoplasmsClinical Features* Symptoms: Sudden development of floaters occurs when the vitreous haemorrhage is small.# In massive vitreous haemorrhage, sudden painless loss of vision.* Signs# Distant direct ophthalmoscopy reveals black shadows against the red glow in small haemorrhages and no red glow in a large haemorrhage.# Direct and indirect ophthalmoscopy may show presence of blood in the vitreious cavity.# Ultrasonography with b-scan is particularly helpful in diagnosing vitreous haemorrhage.