Test on Comprehensive Overview of Choroidal Diseases

Question 1: Hypotony maculopathy is characterized by choroidal folds primarily located in the peripheral retina.

A. Ano

B. Ne

Explanation: Hypotony maculopathy is a specific type of choroidal fold where the folds are found specifically in the macular region due to decreased intraocular pressure, not primarily in the peripheral retina.

Question 2: Based on the provided mnemonic for choroidal folds, which of the following is a recognized cause?

A. Increased intraocular pressure

B. Hypotony

C. Retinal detachment

D. Angioid streaks

Explanation: The mnemonic for causes of choroidal folds is THING + V + D + R + A. The 'H' in THING stands for Hypotony (decreased intraocular pressure). Increased intraocular pressure, retinal detachment, and angioid streaks are not listed as causes in this mnemonic.

Question 3: Can laser therapy be used to treat a choroidal neovascularization membrane (CNVM) when it is present?

A. Ano

B. Ne

Explanation: Laser therapy is a listed treatment option for choroidal neovascularization membrane (CNVM) when it is present.

Question 4: Based on the study materials, what is the prognosis for traumatic choroidal rupture?

A. The prognosis is generally good, regardless of whether the macula is involved.

B. If the choroidal rupture is located on the macula, the prognosis is considered poor.

C. If the choroidal rupture is not on the macula, the prognosis is good, but careful monitoring for choroidal neovascular membrane (CNVM) is advised.

D. The prognosis is consistently poor, even if the rupture is not directly on the macula.

Explanation: The study materials state that the "Prognosis varies". Specifically, it mentions that if the rupture is "on macula: poor" and if it is "not on macula: good but match for CNVM". Therefore, option 1 and 4 are incorrect as they suggest a consistent prognosis. Option 2 correctly states a poor prognosis for macular involvement, and option 3 correctly states a good prognosis for non-macular involvement with a caveat for CNVM.

Question 5: In Gyrate Atrophy, the OAT enzyme effectively metabolizes excessive ornithine, preventing its accumulation in the blood.

A. Ano

B. Ne

Explanation: In Gyrate Atrophy, the OAT enzyme is blocked or absent due to a gene defect, which results in the accumulation of excessive ornithine in the blood, rather than its effective metabolism.