Which of the following is a symptom of developmental glaucoma?

Developmental glaucoma, also known as congenital glaucoma, is characterized by an increase in intraocular pressure due to the abnormal development of the eye's drainage system. One of the hallmark symptoms of this condition is the presence of large eyes, or "buphthalmos." This occurs because the increased pressure causes the eyeball to swell, leading to a visibly larger appearance.

In developmental glaucoma, this symptom often manifests shortly after birth or in early childhood. The enlarged eyes can signify underlying problems with the intraocular pressure and drainage pathways, which is crucial for diagnosing and managing the condition effectively. Early recognition of this symptom is vital, as timely intervention can help prevent severe vision loss and related complications.

The other symptoms listed do not typically reflect the characteristics of developmental glaucoma. For instance, small pupils, vision clarity, and red eyes do not correlate with the main presentations of this condition, making the identification of large eyes as the significant symptom. Understanding the implications of eye size changes serves as an important clinical indicator in pediatric ophthalmology.