Strabismus and Eye Muscle Anatomy

4 recti and 2 oblique's

The apex of the orbit from a fibrous ring called "Annulus of Zinn"

Inserted to the globe behind the limbus

<p>Supero-medial to the optic foramen</p> Signup and view all the answers

<p>It passes forwards through the trochlea at the angle between the superior and medial walls</p> Signup and view all the answers

<p>It inserts into the posterior upper temporal quadrant of the globe</p> Signup and view all the answers

<p>Medial, inferior and superior recti (B)</p> Signup and view all the answers

<p>Lateral rectus (D)</p> Signup and view all the answers

<p>Superior oblique (C)</p> Signup and view all the answers

<p>Misalignment of the visual axes</p> Signup and view all the answers

<p>True (A)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>Angle of Kappa (к)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>Pseudoexotropia</p> Signup and view all the answers

<p>Pseudoesotropia</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>Hypotropia (B)</p> Signup and view all the answers

<p>True (A)</p> Signup and view all the answers

<p>True (A)</p> Signup and view all the answers

<p>Poor lighting conditions (A)</p> Signup and view all the answers

<p>Hypermetropia</p> Signup and view all the answers

<p>Myopia</p> Signup and view all the answers

<p>True (A)</p> Signup and view all the answers

<p>True (A)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>True (A)</p> Signup and view all the answers

<p>True (A)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

The line passing from the fovea, through the eye's nodal point, to the fixation point. In normal binocular single vision, both eyes' visual axes intersect at the fixation point, creating a single image.

A line passing from the posterior pole through the centre of the cornea. It doesn't always align with the visual axis due to fovea's position.

The angle between the visual axis and the optical axis. It indicates how the fovea is positioned relative to the anatomical axis.

The impression of a squint when none exists. Often caused by factors like epicanthal folds or abnormal interpupillary distance.

Squint that is only present when one eye is covered. It reveals the eye's tendency to deviate when binocular single vision is disrupted.

A squint visible when both eyes are open. It indicates persistent deviation of one or both eyes.

A condition where the eyes are perfectly aligned in the absence of any stimulus for fusion, which is relatively uncommon.

A tendency of the eyes to deviate when fusion is blocked, usually present in most people.

The muscle responsible for turning the eye inward (towards the nose).

The muscle responsible for turning the eye outward (away from the nose).

The muscle responsible for raising the eye upwards.

The muscle responsible for lowering the eye downwards.

The muscle that rotates the top of the eye inwards, causing downward and inward movement.

The muscle that rotates the top of the eye outwards, causing upward and outward movement.

The nerve that controls the medial, inferior, and superior recti muscles, as well as the inferior oblique.

The nerve that controls the lateral rectus muscle, responsible for outward eye movement.

The nerve that controls the superior oblique muscle, responsible for downward and inward rotation of the eye.

A test that uses a light source to assess eye alignment by observing the reflection of light on the cornea.

A test that covers one eye at a time to assess if an eye deviates when binocular single vision is disrupted. It helps detect latent strabismus.

A test where the cover is moved alternately between the eyes to observe any movement or deviation of the eyes. This helps detect both latent and manifest squints.

The tendency to look inwards, resulting in eyes converging towards the nose.

The tendency to look outwards, resulting in eyes diverging away from the nose.

The tendency for one eye to look upwards, causing a vertical deviation.

The tendency for one eye to look downwards, causing a vertical deviation.

Excessive use of accommodation to see clearly, often seen in hypermetropia. This can lead to excessive convergence and latent convergent squint.

Relaxation of accommodation, often seen in myopia. This can lead to a lack of convergence and divergent squint.