Retinal Diagramming and Peripheral Retina Exam (M2) Flashcards
What structures are in the inner circle of the retina diagram?
posterior pole, disc, and major vasculature
What structures are in the middle circle of the retina diagram?
peripheral retina (posterior border of ora serrata and termination of photoreceptors)
What structures are in the outer circle of the retina diagram?
pars plana (anterior limit to the fundus)
What is in the very center of the retina diagram?
the fovea
What is the radius of the inner circle of a retinal diagram in DD? 1. Middle circle? 2
- 6 DD
2. 4 DD
What is a detailed examination and drawing of the fundus that goes beyond the standard funduscopy of a normal visit called?
extended ophthalmoscopy
What are the symptoms or conditions that warrant peripheral retinal examination?
- flashes, floaters, films, curtains, spots, etc
2. previous retinal surgeries
Where do most retinal tears occur?
anterior to the equator
What are the risk factors of rhegmatogenous retinal detachment?
- myopia
- lattice degeneration
- previous cataract surgery
- trauma
What is the preferred method of evaluating peripheral vitreoretinal pathology? 1. What may complement it? 2
- indirect ophthalmoscopy with scleral depression
2. slit-lamp biomicroscopy with mirrored CL or a small indirect condensing lens
What are the ANSI standards recommendation for the time of continuous viewing of the retina for BIO?
What percentage of the retina is beyond the vortex veins?
30-40%
What direction should the lens be tilted to view the inferior views during peripheral fundoscopy? 1. superior views? 2
- down (superior edge closer to globe)
2. up
What kind of image does the Hruby lens create for the examiner?
erect, stereoscopic, virtual image
What is the type of lens (in diopters) for the central lens of the 3-mirror gonio? 1. What does it view? 2
- 64 D
2. posterior pole
