Impression cytology in patients with keratoconjunctivitis sicca

Area of Science:

• Ophthalmology
• Cell Biology

Background:

• Dry eye disease affects the ocular surface, leading to changes in the conjunctival epithelium.
• Impression cytology is a valuable tool for assessing these surface changes.

Purpose of the Study:

• To compare epithelial metaplasia and goblet cell density in the superior and temporal bulbar conjunctiva of normal and dry eyes.
• To investigate the regional differences in conjunctival changes associated with dry eye disease.

Main Methods:

• Impression cytology was used to collect conjunctival samples from superior and temporal bulbar regions.
• Samples were graded for epithelial metaplasia and goblet cell density was calculated.
• Data from dry eyes were compared to normal controls.

Main Results:

• Statistically significant differences in goblet cell density and metaplasia grade were observed between superior and temporal conjunctiva in both normal and dry eyes.
• Dry eyes showed significant differences in metaplasia grade and goblet cell density compared to normal eyes in the superior conjunctiva.
• In the temporal conjunctiva, only the metaplasia grade differed significantly between normal and dry eyes.

Conclusions:

• The superior and temporal bulbar conjunctiva exhibit distinct characteristics in terms of metaplasia and goblet cell density.
• Dry eye disease induces significant changes in the superior bulbar conjunctiva, affecting both metaplasia and goblet cell density.
• Temporal bulbar conjunctiva in dry eye disease shows altered metaplasia but preserved goblet cell density compared to normal eyes.