SLIDE 9 2/16/2014 9
JAMA meta-analysis
- floaters vs flashes vs both is not
diagnostically helpful for retinal tear
- older age (>60) is not associated with
increased risk of retinal tear; younger age is not less likely to have retinal tear
discuss evidence behind recommendations from the JAMA paper
subjective visual acuity
baseline 14% prevalence of retinal tear in those with PVD worse vision no change 45% probability
9% probability of retinal tear
Hollands et al. JAMA 2009
vitreous hemorrhage or pigment
baseline 14% prevalence of retinal tear in those with PVD vitreous hemorrhage LR = 10 vitreous pigment LR = 44 62% probability
88% probability
besides allergy and glaucoma - there is no absolute contraindication for pupillary dilation for a good exam. 1 gtt tropicamde + 1 gtt phenylephrine and wait 20 minutes
Key actions
- Assess subjective visual acuity
- Assess visual acuity and peripheral
vision
- Fundiscopic exam +/- slit lamp
need pictures or videos or vitreous hemorrhage and pigment - assess via slit lamp or direct
- phthalmoscopy (Shafer’s or Shaffer’s sign)
root atlas has a video of retinal detachment