Final answer:
QTc prolongation is the lengthening of the corrected QT interval on an ECG, which can increase the risk of abnormal heart rhythms. Pigmentary retinopathy affects the retina and can cause vision loss. Both can be side effects of certain medications.
Step-by-step explanation:
QTc prolongation refers to the lengthening of the corrected QT interval on an electrocardiogram (ECG), which is a measure of the time it takes for the heart to contract and then recharge between beats. Certain medications can cause QTc prolongation as a side effect. When the QTc interval is prolonged, it can increase the risk of arrhythmias, which are abnormal heart rhythms.
Pigmentary retinopathy is a condition that affects the retina, the part of the eye that detects light and converts it into electrical signals for the brain to interpret. It can cause changes in the pigment and structure of the retina, leading to symptoms such as vision loss and difficulty seeing in low light.
Both QTc prolongation and pigmentary retinopathy can be side effects of certain medications used for a variety of conditions. It is important to discuss any concerns about potential side effects with a healthcare professional before starting a new medication.