**Core Concept**
Ocular hypotension, also known as ocular hypotony, is a condition characterized by a decrease in intraocular pressure (IOP). In infants, this can be particularly concerning due to the potential for apnea, which is a pause in breathing. The underlying pharmacological principle being tested here is the ability of certain medications to decrease IOP and potentially cause apnea in infants.

**Why the Correct Answer is Right**
Miotics, specifically pilocarpine, are a class of medications that increase the outflow of aqueous humor from the eye, thereby decreasing IOP. However, in infants, the use of miotics can lead to apnea due to their effect on the autonomic nervous system. The mechanism involves the stimulation of muscarinic receptors in the eye, which can cause a decrease in IOP, but also a decrease in respiratory rate and depth, leading to apnea.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not specify a medication that is known to cause ocular hypotension with apnea in infants. While several medications can cause ocular hypotension, not all of them are associated with apnea.
**Option B:** This option is incorrect because it does not specify a medication that is known to cause ocular hypotension with apnea in infants. While some medications can cause apnea, not all of them are associated with ocular hypotension.
**Option C:** This option is incorrect because it does not specify a medication that is known to cause ocular hypotension with apnea in infants. While some medications can cause ocular hypotension, not all of them are associated with apnea.

**Clinical Pearl / High-Yield Fact**
When prescribing medications that can cause ocular hypotension, it is essential to carefully monitor infants for signs of apnea, such as pauses in breathing or decreased respiratory rate. This is particularly important in the first few days after birth, when the autonomic nervous system is still developing.

**Correct Answer: A. Pilocarpine**