Ophthalmic stones, also known as conjunctival stones, can cause patients to experience discomfort such as a foreign body sensation and rubbing sensation in the eye, which in turn may lead to blepharospasm in patients, but usually do not lead to eye spasms.
Conjunctival stones are multiple, hard, yellow dots on the lid conjunctiva caused by accumulation of epithelial cells and agglomeration of denaturation products pressed in by concentrated mucus. Patients are often asymptomatic when the stones are small in size. When the stone protrudes from the conjunctival surface, it can irritate the cornea and produce a foreign body sensation, or even lead to corneal erosion, and patients may also experience discomfort such as eyelid spasms.
However, because conjunctival stones are of localized etiology, they generally do not cause facial spasms in patients. If a patient experiences both eye and face spasms, it may be due to overexertion, stress, or facial neuritis.
It is recommended that patients with conjunctival stones who have significant symptoms of ocular discomfort seek prompt medical attention to evaluate their condition and follow their doctor’s instructions.