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Flashcards in strabismus and amblyopia Deck (19)
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1

Esotropia

Esotropia (the eye turns inward)

2

Exotropia

Exotropia (the eye turns outward)

3

Hypertropia

Hypertropia (the eye turns up)

4

Hypotropia

Hypotropia (the eye turns down)

5

Sometimes, kids who are farsighted (hyperopes) develop what we call what?

accommodative strabismus or accommodative esotropia because they’re.overconverging while trying to focus up close. (Convergence means the turning of the eyes to focus on a near object.)

6

(Convergence

(Convergence means the turning of the eyes to focus on a near object.)

7

strabismus can be what?

strabismus can be either intermittent (like Abe’s was) or constant. People with intermittent strabismus are more likely to exhibit the problem when they’re tired, sick, or stressed. People with intermittent strabismus often have headaches and double vision because the brain may still be trying to use the input from the turned eye.

8

don’t worry too much about this...

Now, here’s a reassuring note from today’s reading assignment that I’d like to reinforce: don’t worry too much if you see a baby under three or four months old with an occasionally “wandering” eye, because this can be perfectly normal in young infants as their focusing ability develops. After that age, it’s something a doctor should check out.

9

Strabismus dramatically affects eyesight because it interferes with what?

with depth perception or stereopsis—the fusing of images from the two eyes into a clear picture. Stereopsis is what allows us to see in three dimensions.

10

Stereopsis

the fusing of images from the two eyes into a clear picture. Stereopsis is what allows us to see in three dimensions.

11

The most common tools we use to treat strabismus are:

eye muscle surgery and vision therapy.

12

orthoptics.

(which means straight eyes) is the science of using instruments to help realign the eyes. Often, we prescribe this therapy after patients have eye muscle surgery. Opticians who work in this area are called orthoptists.

13

Why doesn’t surgery alone fix the problem?

Why doesn’t surgery alone fix the problem? Here’s the answer. When a person who’s had misaligned eyes for some time has surgery to align the eyes, the straightened eye has to start using a different part of the retina. Vision therapy exercises help train that new part of the retinal nerve fiber layers to receive signals and transport them to the brain.

14

Vision therapy involves what?

Vision therapy involves orthoptics, but it also includes eye exercises that can improve visual and perceptual efficiency even if the eyes are straight. The approaches you’ll use in vision therapy include computer programs, lenses, prisms, eye patches, and eye-hand coordination exercises

15

The approaches you’ll use in vision therapy include :

The approaches you’ll use in vision therapy include computer programs, lenses, prisms, eye patches, and eye-hand coordination exercises

16

vision therapy typically is most successful for who?

vision therapy typically is most successful for young children

17

monocular vision

monocular vision—that is, vision in only one eye

18

prism lenses.

prism lenses. These are lenses that have a thick base and a thin apex (top).

19

Prisms do what to an image

Prisms displace an image, making it appear in a different direction. This moves the patient’s eye in the desired direction. As a result, the eye will appear straighter, and the relocated image will allow the two eyes to work together better.