What causes a sudden red blood spot on the white of the eye?

A sudden appearance of a red blood spot on the white part of the eye may be related to trauma, bacterial keratitis, hypertension, and other causes. A detailed analysis is as follows:

1. Trauma

If the eye has suffered impact or injury, it may lead to abnormal rupture of capillaries in the eye, resulting in symptoms such as redness, swelling, and pain. Patients can apply an ice pack to the affected area for cold compresses to constrict blood vessels, reduce bleeding, and alleviate discomfort.

2. Bacterial Keratitis

Inflammatory factors invading the cornea may cause abnormal dilation of capillaries, leading to temporary vision decline, redness, swelling, and itching. Patients should follow medical advice to use antibacterial eye drops such as chloramphenicol eye drops or gatifloxacin eye drops for anti-infective treatment.

3. Hypertension

Elevated systemic blood pressure due to hypertension may place excessive pressure on ocular blood vessels, potentially causing abnormal vessel rupture. In such cases, patients should take antihypertensive medications as prescribed, such as amlodipine besylate tablets or nifedipine tablets.

In addition to the common causes mentioned above, this condition may also be associated with blood coagulation disorders, thrombocytopenic purpura, glaucoma, diabetic retinopathy, and other conditions. If other accompanying symptoms occur, patients should promptly seek medical attention at a hospital and work with doctors to receive appropriate treatment based on the underlying cause.