Final answer:
Drugs that inhibit heme synthesis, such as Succinylacetone and N-methyl mesoporphyrin IX, could potentially cause hematologic abnormalities but are not directly linked to causing subconjunctival hemorrhages. Subconjunctival hemorrhages can result from various factors including trauma and the use of anticoagulants.
Step-by-step explanation:
The drug that causes subconjunctival hemorrhages, or sub-conj. hemes, is not specifically linked to one particular drug. However, certain drugs that inhibit heme synthesis could theoretically lead to hematologic abnormalities that might predispose an individual to develop subconjunctival hemorrhages. Inhibitors of heme synthesis include substances like Succinylacetone (SA), which acts on the enzyme aminolevulinic acid dehydratase, and N-methyl mesoporphyrin IX, which blocks iron insertion into protoporphyrin IX. These drugs inhibit the production of heme, an essential component of hemoglobin in red blood cells. While these inhibitors are directly associated with disrupted heme synthesis, the relationship between these drugs and subconjunctival hemorrhages has not been explicitly established. Generally, subconjunctival hemorrhages can occur due to trauma, increased venous pressure, or as a side effect of anticoagulant medications, among other causes.