Retina cases Flashcards
(120 cards)
Macular hole DDx
macular pucker, CME intraretinal cyst >Pseudohole -Appearance of hole w/ steep walls -Caused by vascular tortuosity around macula >Lamellar Hole -Thin layer of retina lifted w/ walls “bulging out” -Maybe precursor or resolved macular hole
Macular hole history questions
previous trauma? previous eye surgery?
Macular hole exam
complete exam, especially of macula Perform Watzke-Allen test (slit beam and see if line broken/distorted): >distortion = pucker >broken = hole
Macular hole evaluation
OCT = preferred modality IVFA with early hyperfluorescence w/o leakage for hole
Macular hole stage 1 definition and Rx
Stage 1 = impending hole Rx: Observe, as 50% will resolve spontaneously
Macular hole stage 2 vs 3 definition and Rx
Stage 2: full thickness hole 400 um, + elevated rim Rx: vitrectomy +/- ILM peel if operated w/in 1st 6 mo can regain 1/2 visual loss. others operate up to a year. small portion of patients may benefit even if long-standing history of hole Education: low risk for RD, but must explain Si/Sx to patient
Macular hole stage 4 definition and Rx
Stage 4: hole with cuff and complete PVD Rx: vitrectomy +/- ILM peel if operated w/in 1st 6 mo can regain 1/2 visual loss. others operate up to a year. small portion of patients may benefit even if long-standing history of hole Education: low risk for RD, but must explain Si/Sx to patient
Bulls eye maculopathy DDx
chloroquine/hydroxychlorquine toxicity cone dystrophy macular degeneration (AMD) Stargardt or fundus flavimaculatus battens = (AR) lysozyme storage dz. H/o seizures and progressive dementia with retinal findings of pigmentary retinopathy
Bulls eye maculopathy history questions
Medications: chloroquine/hydroxychlorquine (dosages)? History: FH of retinal dz, Sx of photophobia, seizures, ataxia, dementia
New macular hole grading system?
Small 400um
Bulls eye maculopathy exam
BCVA, IOP, DFE with special attention to macular pigment changes, drusen, macular, or peripheral pisciform (fish-like) flecks, CNV Perform a neurologic exam
Bulls eye maculopathy evaluation
If: patient younger, no RA, not taking chloroquine/hydroxychlorquine then order ERG and IVFA If ERG shows a non-recordable photopic response I would suspect a Dx of cone dystrophy If IVFA shows silent choroid I would suspect stargardt
Bulls eye maculopathy A/P
need to evaluation medication dosages. Maximum daily dose of chloroquine
chloroquine/hydroxychlorquine toxicity education
once toxicity starts, it may continue despite stopping the medication: Baseline exam vision, fundus photos, HVF (red test) OCT MAC
NV fronds with exudates and hemorrhage in child ddx
sickle cell retinopathy (sea-fan shaped) sarcoid sea fan neovascularization diabetic retinopathy eales peripheral retinopathy of unknown etiology
NV fronds with exudates and hemorrhage in child: history and eye exam
medical history of: sickle cell, DM, sarcoid, IVDA look for in eye exam: uveitis, iris nodules, NVI, DFE
NV fronds with exudates and hemorrhage in child:
tests: sickledex, ACE, lysozyme, fasting blood glucose, CT of chest if sarcoid suspected. IV FA to assist evaluation and development of Rx plan
Sickle cell A/P:
NV –> needs PRP to ischemic area located anterior to sea fan RD: PPV precautions (avoid encircling SB or taking down EOMs, avoid epi in local anesthetic, ensure O2 & hydration) For pts with sickle cell history and no evidence of retinopathy - plan f/u exams q6-12 mo for patients who develop retinopathy, plan closer f/u q3-4 mo, performing PRP as needed
sickle cell education
SC worst ocular Sx (SC>Sthal>SS>SA) SS worst systemic Sx Avoid CAI variable Px. with good patient education and comprehensive interval f/u, patients can expect to maintain good visual potential. Also need to have PCP involved to discuss si/sx of systemic sickle crisis
Sickle cell signs and stages
–Stage 1: peripheral arteriolar occlusion –Stage 2: peripheral AV anastomoses –Stage 3: preretinal sea fan NV (posterior border of nonperfusion; may autoinfarct and turn white) –Stage 4: Vitreous hemorrhage –Stage 5: Tractional RD Black sunburst (mid-peripheral pigmented lesion with spiculated borders) Salmon patch (IRH) Iridescent spots (intraretinal spots s/p resorption of salmon patch) angoid streaks (conjunctival comma-shaped capillaries in inferior fornix)
4 quadrants flame shaped hemorrhages following NFL, swollen ON DDx
CRVO DM Radiation retinopathy hypertensive retinopathy papilledema
4 quadrants flame shaped hemorrhages following NFL, swollen ON History
History Questions: HAs, transient visual obscurations glaucoma, thyroid eye disease, DM, HTN, radiation, hypercoagulable dz, vasculitis (lupus, syphilis, sarcoid) medications (OCP, diuretics, tetracycline, trenitoin), orbital tumors
4 quadrants flame shaped hemorrhages following NFL, swollen ON eye exam
VA pupils Hertel ocular motility gonioscopy (looking for NVI/NVA) IOP DFE looking for NVD and macular edema
4 quadrants flame shaped hemorrhages following NFL, swollen ON tests
IVFA to determine and define macular edema - whether condition is ischemic or non-ischemic IVFA will show non-perfused areas and the OCT macular swelling Check: BP, evaluate for DM (FBS, HgA1c) order screening labs (CBC, PT/PTT, ESR, lipid profile, homcysteine), sarcoid suspects (ACE, lysozyme, chest CT), atypical cases (FT-ABS, Lyme titer, ANA) Refer for cardiovascular and hypercoagulable work-up as needed