Which glaucoma medication can mask signs of hypoglycemia in diabetics as well as signs of hyperthyroidism?

Beta blockers are known to mask signs of hypoglycemia in diabetics, such as tachycardia, which is typically a response to low blood sugar levels. This occurs because beta blockers can blunt the adrenergic response that would indicate hypoglycemia, making it more challenging for individuals with diabetes to recognize when their blood sugar levels are dangerously low.

Additionally, beta blockers can also mask symptoms of hyperthyroidism. Hyperthyroidism often presents with symptoms such as increased heart rate (tachycardia) and tremors, both of which can be mitigated by the use of beta blockers. By acting on beta-adrenergic receptors, these medications reduce heart rate and can alleviate some symptoms associated with excessive thyroid hormone levels, making it difficult for clinicians to identify the underlying endocrine disorder.

Therefore, the properties of beta blockers in terms of symptom masking for both hypoglycemia and hyperthyroidism make them the appropriate choice in this scenario.