Peripheral Retinal Degeneration Flashcards
(31 cards)
What is retinoschisis?
Splitting of the neurosensory layers of the retina by fluid, resulting in complete loss of visual function in that area
What are the signs/sxs of retinoschisis?
Convex, smooth bullous elevation
Possibly bilateral
IT quadrant most common
Absolute field defect
Usually asx
What are the potential complications of retinoschisis?
Posterior pole involvement
RD
Retinal break
Vitreous haem (rare)
What are the signs of retinoschisis on OCT?
Retina split at outer plexiform layer
Intraretinal hyporeflective cavities
Thickened RPE
What is the management for retinoschisis?
Monitor unless symptomatic or RD
What is the treatment for retinoschisis?
Argon Laser Photocoagulation
What are the signs of white without pressure?
Often bilateral
Sharp margins - may be scalloped
Post equatorial
Obscured choroid
White or translucent
May migrate
Possible dark without pressure lesion posterior
What does white without pressure look like on OCT?
Hyper-reflective outer layers
What is the management for white without pressure?
Recall 1-2 years
F&F advice (low risk)
What is white with pressure?
Peripheral detachment, no break
Only seen on scleral depression
What is peripheral cystoid degeneration?
Intraretinal microcysts
What is snowflake degeneration?
White-yellow dots (crystalline deposits)
Between ora serrata and equator
What are the potential complications of snowflake degeneration?
Retinal tear
Retinal hole
RD
What is pearl degeneration?
White beads on retina
Above RPE or between RPE and Bruch’s
What is lattice degeneration?
Retinal thinning and loss of neurosensory layer with vitreoretinal adhesions at the margin
May have atrophic holes, pigment and deposits.
What are the signs of lattice degeneration?
Bilateral
Thinning and fibrosis
Arborzing white lines
Vitreous liquefaction
Spindles
Frost-like areas
What are the potential complications of lattice degeneration?
RD caused by PVD and traction or atrophic holes
PVD
What is the management for lattice degeneration?
F&F advice and leaflet
Treatment only if sxs
What is the treatment for lattice degeneration?
Prophylactic laser
What is snail track degeneration?
Retinal thinning with vitreous liquefaction
What are the signs of snail track degeneration?
Groups of glistening white dots
ST or SN quadrants more common
What are the potential complications of snail track degeneration?
Retinal holes or tears
What does snail track degeneration look like on OCT?
Irregular retinal surface
Vitreous destruction
Vitreoretinal adhesions with marginal traction
What is a retinal tuft?
Degeneration caused by vitreous pulling
