Glaucoma Flashcards
True primary congenital glaucoma (at what age)
At birth
Infantile primary congenital glaucoma (at what age)
Below 3 yrs
Juvenile primary congenital glaucoma (at what age)
Above 3 yrs
First symptom of primary congenital glaucoma
Watering eyes (most common)
Haab striae
Horizontal striae on descemets membrane seen in congenital glaucoma
Vogt striae
Vertical striae in keratoconus
What blocks flow of aqueous humor in congenital glaucoma
Barkan’s membrane
Treatment of primary congenital glaucoma
Gonioscopy
Ocular HTN (IOP,optic disc,visual field)
IOP > 21 mm hg
OD Normal
Visual field normal
Primary open angle glaucoma (IOP, optic disc, visual field)
IOP > 21 mm hg
OD changes present
Visual field changes present
Normal tension glaucoma (IOP,optic disc,visual field)
IOP < 21 mm hg
OD changes present
Visual field changes present
Definition of glaucoma
Progressive optic nerve damage
At what difference of value can you say diurnal variation is present in IOP
> 8 mm variation
Cup disc ratio in open angle
> 0.7
Normal thickness of neuroretinal rim
Thickest to thinnest areas of eye
I> S> N> T
This is disrupted in glaucoma
Laminar dot sign
Prominence of lamina cribrosa
Open angle spectrum
Bayoneting sign
Bending of vessels
Glaucoma
First visual field change in open spectrum
^^^^^^
Isoptre contraction (baring of blind spot)
First visual field defect in open spectrum
Paracentral scotoma in bjerrum’s area
Bjerrum scotoma aka
Arcuate scotoma
Roenne’s central nasal step
2 architects scotomas run in different arcs and meet to form a sharp right angled defect
S/E of prostaglandin
Hypertrichosis
Hyperpigmentation around eye
Hyperpigmentation of iris
Deep sulcus orbitopathy(fat atrophy)
C/I of prostaglandin
Uveitis
Macular oedema
S/E of beta blockers
Allergic blepharoconjunctivitis
Corneal epithelial toxicity-dry eyes
Systemic side effects of carbonic anhydrase
Bad metallic taste
Renal stones
Constipation
Tingling/numbness (most common)
Topical S/E of carbonic anhydrase
Corneal oedema