OTHER LENS ANOMALIES

Question 1

what is PCO?

Answer 1

• left over cells from the natural lens begin to grow on the posterior capsule

Question 2

PCO symptoms?

Answer 2

• gradual blru vision
• difficulty with night driving, glare, halos, low light situations
• if capsular stria – maddox rod effect, which describes posterior capsule fold causing a bothersome streak of light in vision.

Question 3

what is capsular striae?

Answer 3

tension on the capsule from the haptics – the orientation of the striae are parallel to the orientation of the haptics.

Question 4

capsular striae cause a maddox rod phenomenon symptom. what is a maddox rod phenomenon?

Answer 4

• describes posterior capsule fold causing a bothersome streak of light in vision.

Question 5

signs of PCO?

Answer 5

• opacification of the posterior lens capsule which may manifest as any combination of striae, haze or elschnig pearls

Question 6

tx for PCO?

Answer 6

• YAG capsulotomy – removes proliferated lens cells (do not grow back).

Question 7

define ectopia lentis

Answer 7

it is displacment (luxation or subluxation) of the natural lens

Question 8

what are symptoms of ectopia lentis?

Answer 8

• possible asymtomatic
• diplopia
• blur
• angle closure symptoms

Question 9

signs of ectopia lentis?

Answer 9

presentation is based on the cause of ectopia lentis:
* blunt trauma
* marfan’s syndrome – bilateral, lens located up & out.

Question 10

tx for ectopia lentis?

Answer 10

• surgery to remove the dislocated lens + new refractive error corrected.
• underlying dx should be treated.