Slitlamp Flashcards

1
Q

Diffuse

A
  • overall view of the anterior segment
  • corneal scarring
  • substantial infiltration or neovascularization
  • edema of epithelium
  • lids, eyelashes, caruncle and scleral vessels
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2
Q

Specular Reflection

A

• Precorneal fluid, mucus secretion, lipid layer, tear layer assessment, Depression of the anterior and conjunctival surface, Polymegathism

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3
Q

Parallelpiped

A
  • Broad view of the anterior and posterior corneal surfaces
  • Stroma
  • Anterior surface irregularities
  • Examine endothelium and striae formation
  • General survey of eye – scars, abrasions blood vessels and fold in Descemet’s membrane
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4
Q

Optic Section

A
  • Identify the following: tear layer/ contact lens, epithelium (dark line), bowman’s layer (bright line), Stroma (grey), Descemet’s membrane (thin lining), Endothelium zone (appears brighter than stroma but not as bright as tear layer)
  • Shows thickening, thing and distortions
  • Depth of foreign bodies or opacities
  • Wide slice of stroma
  • Aqueous flare
  • Anterior chamber and its angle
  • Examine the crystalline lens
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5
Q

Conical Beam

A

• Observe debris floating in the anterior chamber, Red blood cells, White blood cells, Granules of pigment – Aqueous Flare

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6
Q

Indirect Retro Illumination

A
  • Study iris and cornea for pathology
  • Opaque foreign body imbedded in the cornea (figuring out the exact spot)
  • Find vesiculation of corneal epithelium
  • Ghost vessels
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7
Q

Retro Illumination

A
  • Scars
  • Pigments
  • Neovascularization
  • Edema at the epithelium
  • Corneal precipitation
  • Microcyst
  • CL deposits
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8
Q

Sclerotic Scatter

A
  • Observe Central corneal clouding (corneal edema) which is best seen by this method of illumination with observation by the naked eye
  • Observe the position and movement of contact lens in situ
  • Observe if a disturbance of the normal transparency is present
  • macula, scars, deposits or pigmented areas
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9
Q

What are the 3 direct focal illumination?

A

Conical beam, Optic section and parallelpiped

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10
Q

which illumination is out of click?

A

Sclerotic scatter and Retro illumination

Sometimes Indirect Retro Illumination

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11
Q

Which illumination is angled less than 45 degrees?

A

Optic sections, conical beam and sclerotic scatter

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12
Q

Which illumination is angled at 45 degrees?

A

Diffuse

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13
Q

Which illumination are angled higher than 45 degrees?

A

specular reflection, parallelepiped, Indirect Retro Illumination, Retro Illumination

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14
Q

Which Illumination would you use to check for Aquaoues Flare?

A

Optic Section

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15
Q

Which Illumination would you use to check the blood vessel in the cornea?

A

Parallelpiped

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16
Q

Which Illumination would you use to check for Oedema?

A

Diffuse

17
Q

Which Illumination would you use to check the general overview of the cornea?

A

Diffuse

18
Q

Which Illumination would you use to checks the tear layer?

A

Specular reflection