Conjunctival changes following Muller's muscle conjunctival resection

Area of Science:

• Ophthalmology
• Histopathology
• Ocular Surface Disease

Background:

• Muller's muscle conjunctival resection (MMCR) is a surgical procedure impacting the conjunctiva.
• Goblet cells are crucial for ocular surface lubrication and health.
• Understanding conjunctival changes post-MMCR is vital for patient outcomes.

Purpose of the Study:

• To histologically analyze conjunctival changes, specifically goblet cell populations, after MMCR.
• To compare goblet cell density in patients who underwent MMCR with a control group.

Main Methods:

• Retrospective analysis of conjunctival specimens from MMCR patients and controls.
• Hematoxylin and eosin (H&E) and periodic acid-Schiff (PAS) staining for goblet cell identification.
• Evaluation by two ocular pathologists to quantify goblet cells and note anatomical changes.

Main Results:

• A statistically significant reduction in goblet cell population (7 ± 5 cells/mm²) was observed in the post-MMCR conjunctiva compared to controls (39 ± 16 cells/mm²).
• Both groups exhibited scarring and inflammatory cell infiltrate.
• No significant difference in mean age between the post-MMCR (67 years) and control (66 years) groups.

Conclusions:

• MMCR leads to a relative loss of conjunctival goblet cells in the surgical area.
• Sufficient goblet cell reserve from accessory lacrimal glands and unaffected conjunctiva may compensate for the loss.
• This compensation likely ensures adequate ocular lubrication and protection, mitigating dry eye symptoms post-MMCR.