NCLE PRACTICAL EXAM
Optical Coherence Tomography (OCT) - ANSWERS-Imaging
instrument used to create ocular ultrasounds giving cross-sectional
views of the eye and measurements of tissue thickness; used to
evaluate glaucoma (ONH), retinal pathologies, and anterior segment
disorders
schirmers Test #1 - ANSWERS-small strips of filter paper (5>
30mm), close eyes for 5 mins. Paper strips are inserted near the lateral
canthus of the eye adjacent to the conjunctiva
Wait 60 seconds
Measure the amount of tear production
Schirmer's test #2 - ANSWERS-cotton swab inserted in nose and
irritate the nasal mucosa for 15 seconds. less then 15mm's in 2
minutes is indicative reflex secretion problem
Tear Film Break-up time (BUT) - ANSWERS-Measurement of the
time interval between a blink and the development of a dry spot in the
pre-corneal tear film; less than 10 seconds is abnormal.
Slit Lamp Illumination Usages - ANSWERS-Diffuse Illumination
Direct Focal Parallelpiped
Retro Illumination
, Diffuse Illumination - ANSWERS-widest slit w/longest aperture
used to view overall areas
ocular adnexa, cornea, sclera, lids, conjunctiva, lens surface
lens fitting characteristics
Direct Focal Parallepiped Illumination - ANSWERS-creates a 3-D
cube
used to assess width, depth & height of an object within the cornea
scars, infiltrates, staining and lens/cornea relationship
Retro Illumination - ANSWERS-light source is out-of-clic, reflected
off the iris and used to back light area being studied
examining corneal scars, debris, microcysts, sctraches on lens, sup-
epithelial changes, corneal vascularization, diffuse edema and surface
deposits
Slit Lamp Illumination Controls - ANSWERS-Width Control
2mm= Retro & Direct Focal Parallelpiped
20mm= Diffuse
Slit Lamp Magnifications - ANSWERS-Low Magnification= 10
Medium Magnification= 16
High Magnifications= 25
Optical Coherence Tomography (OCT) - ANSWERS-Imaging
instrument used to create ocular ultrasounds giving cross-sectional
views of the eye and measurements of tissue thickness; used to
evaluate glaucoma (ONH), retinal pathologies, and anterior segment
disorders
schirmers Test #1 - ANSWERS-small strips of filter paper (5>
30mm), close eyes for 5 mins. Paper strips are inserted near the lateral
canthus of the eye adjacent to the conjunctiva
Wait 60 seconds
Measure the amount of tear production
Schirmer's test #2 - ANSWERS-cotton swab inserted in nose and
irritate the nasal mucosa for 15 seconds. less then 15mm's in 2
minutes is indicative reflex secretion problem
Tear Film Break-up time (BUT) - ANSWERS-Measurement of the
time interval between a blink and the development of a dry spot in the
pre-corneal tear film; less than 10 seconds is abnormal.
Slit Lamp Illumination Usages - ANSWERS-Diffuse Illumination
Direct Focal Parallelpiped
Retro Illumination
, Diffuse Illumination - ANSWERS-widest slit w/longest aperture
used to view overall areas
ocular adnexa, cornea, sclera, lids, conjunctiva, lens surface
lens fitting characteristics
Direct Focal Parallepiped Illumination - ANSWERS-creates a 3-D
cube
used to assess width, depth & height of an object within the cornea
scars, infiltrates, staining and lens/cornea relationship
Retro Illumination - ANSWERS-light source is out-of-clic, reflected
off the iris and used to back light area being studied
examining corneal scars, debris, microcysts, sctraches on lens, sup-
epithelial changes, corneal vascularization, diffuse edema and surface
deposits
Slit Lamp Illumination Controls - ANSWERS-Width Control
2mm= Retro & Direct Focal Parallelpiped
20mm= Diffuse
Slit Lamp Magnifications - ANSWERS-Low Magnification= 10
Medium Magnification= 16
High Magnifications= 25
