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WorksheetsUvea
Total questions: 20
Worksheet time: 10mins
The following are layers of the uvea except:
Iris
Ciliary Body
Pupil
Choroid
The iris:
Extends from root in anterior chamber to pupil
It consists of a trilayer of epithelium
Is largely composed of non-pigmented epithelium
Consists only of parasympathetic nerves
The ciliary body:
has three sections, pars plana, pars plicata and pars semilunaris
has an inner layer that is continuous with the neural retina
has cuboidal epithelium that are devoid of gap junctions
does not contribute to aqueous production
The choroid :
Extends from the ora serrata to the optic disc
is scarce in melanocytes
plays a small role in the supply of oxygen / nutrients, removal of waste products and heat dissipation
allows light to enter and exit the globe via the sclera
1) Located in the inferonasal quadrant
2) Resembles a keyhole; may also be partial resulting in an oval pupil
3) Can be bilateral or unilateral
4) May involve only the iris but often are more extensive with involvement of the ciliary body, retina, lens, choroid, and even the optic nerve
Aniridia
Cataract
Iris coloboma
Uveitis
Which of the following statements is untrue about congenital aniridia?
It is hereditary
May be associated with mental retardation and genitourinary abnormalities
Associated with the PAX6 gene mutation on chromosome 11p13
It is unilateral
A young albino child has aniridia. Which of the following sign or symptoms is he unlikely to have?
Photophobia
Nystagmus
Normal vision
Strabismus
Treatment of congenital aniridia may include the following except:
Medical treatment of intraocular pressure
Long-term steroids
Use of tinted or iris contact lenses, spectacle lenses or intraocular lenses (IOLs)
Treatment of amblyopia and strabismus
This condition is referred to as:
Iris coloboma
Keyhole melanoma
Congenital Cataracts
heterochromia
What do you see?
hypopyon
corneal infiltrates
keratic precipitates
corneal abrasions
Name the sign you see:
posterior synechiae
glucomfleken
peripheral anterior synechiae
anterior capsular cataract
Which of the following is least useful in assessing a uveitis?
optical coherence tomography
fluorescein angiogram
visual fields
B scan ultrasound
Patients with HLA-B27 antigen:
Develop uveitis at an older age
Have a shorter duration of ocular disease
Have fewer recurrences
May have low backache and stiffness
Inflammatory bowel disease that involves skip lesions of the gut:
Crohn's disease
Ulcerative colitis
Behcet's disease
Ankylosing spondylitis
This following condition can be seen in:
anterior uveitis
ulcerative keratitis
intermediate uveitis
conjunctivitis
Sarcoidosis is least likely to affect the following organ:
parotid gland
lungs
spleen
eyes
A patient has recurrent episodes of uveitis and orogenital ulceration. Which of the following is accurate?
Sarcoidosis
Behcet's disease
Psoriasis
Vogt-Koyanagi-Harada
Vogt-Koyanagi-Harada disease
does not involve the skin
presents with deafness
is associated with tractional retinal detachment
involves blepharitis
The following are likely to be seen more in HIV patients except:
molluscum contagiosum
large dendritic ulcer
herpes zoster ophthalmicus
adenoviral conjunctivitis
Acute retinal necrosis is commonly caused by the following organisms except:
herpes simplex 1
herpes simplex 2
varicella zoster
poxvirus
