Which of the following conditions may present with blurred vision and headaches?

Preeclampsia is a pregnancy-related condition characterized by high blood pressure and signs of damage to other organ systems, most often the liver and kidneys. Blurred vision and headaches are common symptoms experienced by women with preeclampsia due to the increased blood pressure affecting blood flow to the eyes and brain. This condition typically occurs after 20 weeks of pregnancy, and if not managed, it can lead to serious complications for both the mother and the fetus.

While diabetes, hypertension, and anemia can also cause blurred vision and headaches, they manifest in different contexts. Diabetes can lead to diabetic retinopathy, which may cause vision changes over time, but it is more commonly associated with fluctuating blood sugar levels rather than acute headaches and blurred vision. Hypertension can contribute to visual disturbances and headaches but is often seen in conjunction with other symptoms of elevated pressure. Anemia typically results in fatigue and weakness and is less likely to directly cause visual disturbances.

Thus, the distinct combination of blurred vision and headaches in the context of high blood pressure and potential systemic effects makes preeclampsia the most appropriate choice in this scenario.