Low Vision

A subjective measurement of a patient’s ability to detect pattern stimuli at low contrast.

• Contrast Sensitivity

• Visual Evoked Potential

• Ophthalmic Ultrasonography

• Electroretinography

The best single objective test of overall retinal function

• Contrast Sensitivity

• Visual Evoked Potential (VEP)

• Ophthalmic Ultrasonography

• Electroretinography

A technique using a diffraction grating with a coherent source of light to create interference fringes on the retina.

• Ophthalmic Ultrasonography

• Laser Interferometry

• Electrooculography

• Electroretinography

It is an objective measurement of visual function, which is monitored at the level of the occipital cortex with scalp electrodes.

• Visual Evoked Potential (VEP)

• Electroretinography

• Laser Interferometry

• Ophthalmic Ultrasonography

It is recorded in response to movements of the eye and arises mainly from the retinal pigment epithelium.

• Laser Interferometry

• Electroretinography

• Electrooculography

• Ophthalmic Ultrasonography

It is universally regarded as an important means of soft-tissue examination of the eye and orbit.

• Electrooculography

• Ophthalmic Ultrasonography

• Electroretinography

• Visual Evoked Potential (VEP)

Electroretinography function used the reflection of sound waves

• True

• False

Ophthalmic Ultrasonography used to aid in the presurgical prediction of postsurgical visual function.

• True

• False

The contrast sensitivity function is how a patient sees large targets of poor contrast and small letters of high contrast

• True

• False

Slow speed of sound is necessary to calculate the power of intraocular lenses.

• True

• False