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This study was carried out on 83 patients with alopecia areata. Ophthalmological examinations showed lens changes in 65 patients and alterations in the retinal epithelium in 28 patients. The relationships between pigment cells and hair cycle are discussed.

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We report 36 patients with thimerosal-induced follicular allergic contact conjunctivitis. 18 patients had follicular conjunctivitis without eyelid involvement, while 5 patients had follicular conjunctivitis associated with an allergic contact dermatitis of the eyelids; all these patients had been using thimerosal-containing eye drops. A further 13 patients were soft contact lens wearers who became sensitized to their own thimerosal-containing lens solutions. All 36 patients showed a positive patch test reaction to thimerosal, while only 1 of them reacted to an ophthalmic solution. Thimerosal sensitization appears to be clinically relevant in ophthalmic patients.

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