Retinal Detachment

Question 1

Signs of chronic RD

Answer 1

• Retinal thinning
• Demarcation lines (‘high tide 
    marks’)
• Intraretinal cysts
• Proliferative vitreoretinopathy

RAPD (if extensive detachment),
relative field defect,
Reduce IOP but may be normal or increase (Schwartz syndrome)
mild AC activity

Question 2

PVR

Answer 2

Type A - Vitreous haze/pigment
Pigment on inner retina
B - Retinal wrinkling + stiffness
C - Rigid retinal folds (‘starfolds’)

   Subtypes of C Location  Pre-equatorial  - Anterior 
            Post-equatorial - Posterior Extent  -  1–12 number of clock-hours Contraction Type 1-5 Focal, Diffuse, Subretinal, Circumferential, Anterior

Question 3

Modified Lincoff’s rule

Answer 3

shallow inferior RD in which the SRF is slightly higher on the temporal side points to a primary break located inferiorly on that side
○ A primary break located at 6 o’clock will cause an inferior RD with equal fluid levels
○ In a bullous inferior RD the primary break usually lies above the horizontal meridian
○ If the primary break is located in the upper nasal quadrant the SRF will revolve around the optic disc and then rise on the temporal side until it is level with the primary break
○ A subtotal RD with a superior wedge of attached retina points to a primary break located in the periphery nearest its highest border
○ When the SRF crosses the vertical midline above, the primary break is near to 12 o’clock, the lower edge of the RD corresponding to the side of the break