Test on Retinal Breaks and Detachments

Question 1: Scleral depression increases the risk of a retinal break.

A. Ano

B. Ne

Explanation: The study materials discuss 'Scleral indentation or Depression' and 'Risk of a retinal break for a RRD' by listing different types of breaks and their associated risks. However, the materials do not state that scleral depression itself increases the risk of a retinal break.

Question 2: What is a key distinguishing feature between retinoschisis and retinal detachment (RD), according to the study materials?

A. Retinoschisis always involves splitting within the nerve fiber layer, while RD involves the separation of the retina from the RPE.

B. Retinoschisis is characterized by fluid accumulation outside the retina, whereas RD involves fluid accumulation within the retina.

C. Retinoschisis is an inherited X-linked condition, while RD is primarily age-related.

D. Retinoschisis can lead to retinal detachment, indicating they are separate conditions.

Explanation: The study materials state that X-Linked Juvenile Retinoschisis involves 'splitting of the retina at the fovea within the nerve fiber layer', and a key differential diagnosis phrase is 'out of retina' (for RD) vs 'within retina' (for retinoschisis). It also mentions that retinoschisis 'can lead to retinal detachment but not by itself the condition', confirming they are distinct. Option 1 correctly identifies the splitting *within* the retina for schisis versus the separation (or 'out of retina') for RD. Option 4 reinforces that retinoschisis and RD are distinct but related conditions. Option 2 is incorrect because retinoschisis involves splitting *within* the retina, which implies fluid or space *within* the retina, not outside. RD involves separation from the RPE, where subretinal fluid accumulates. Option 3 is incorrect because while X-linked retinoschisis is inherited, not all types of retinoschisis are, and RD can have various causes beyond just age.

Question 3: A patient with an acute incomplete PVD, where no retinal break was initially found, should return for a follow-up dilation and recheck of the fundus after 3 months, assuming no new symptoms.

A. Ano

B. Ne

Explanation: For an acute incomplete PVD where no break was initially found, the patient should return for a follow-up dilation and recheck of the fundus in 4-6 weeks. If still nothing is found after that period, then they should come back in 3 months.

Question 4: According to the study materials, what is the approximate increased risk of retinal detachment (RD) when vitreous hemorrhage is present, indicating a retinal break?

A. 15-20%

B. 40-50%

C. 70-90%

D. 5-10%

Explanation: The study materials state that if vitreous hemorrhage is present due to a retinal break, the risk of retinal detachment (RD) increases to 70-90%. This indicates a high probability that a retinal break is present and needs to be found.

Question 5: The laser photocoagulation treatment area involves healing around the break for exactly 100 minutes, exclusively.

A. Ano

B. Ne

Explanation: The study materials state the treatment area is to "heal around break (100 minutes) surrounding break and whole break", indicating that the 100 minutes refers to the healing process around the break, and the treatment also involves the area surrounding the break and the whole break, not exclusively healing around the break for a set time.