Differential Diagnosis for Small White Opaque Dot on Lower Conjunctiva after Cataract Surgery

• Single Most Likely Diagnosis
  • Tissue Plugs or Conjunctival Blebs: These are small, white, opaque dots that can appear on the conjunctiva after cataract surgery, often resulting from the healing process or as a complication of the surgery itself. They are usually benign and may resolve on their own.
• Other Likely Diagnoses
  • Suture Granuloma: This occurs when the body reacts to sutures used in the surgery, leading to the formation of small, white nodules on the conjunctiva. These are generally harmless but may require removal if they cause discomfort or interfere with vision.
  • Conjunctival Cyst: A benign cyst that can form on the conjunctiva, appearing as a small, white, opaque dot. These cysts are usually asymptomatic and may not require treatment unless they cause irritation.
• Do Not Miss Diagnoses
  • Endophthalmitis: Although less likely, endophthalmitis is a severe infection within the eye that can present with a variety of symptoms, including a white dot on the conjunctiva. It is critical to diagnose and treat promptly to prevent vision loss.
  • Retained Lens Fragment: A complication of cataract surgery where a piece of the lens is left behind, potentially causing inflammation or infection. Early detection is crucial for effective management.
• Rare Diagnoses
  • Conjunctival Lymphoma: A rare type of cancer that can manifest as a white lesion on the conjunctiva. Given its rarity and potential severity, it should be considered in the differential diagnosis, especially if other symptoms are present.
  • Conjunctival Amyloidosis: A condition characterized by the deposition of amyloid proteins in the conjunctiva, which can appear as small, white lesions. It is rare and usually associated with systemic amyloidosis.