Ophthalmic Plastic Surgery Services, LV Prasad Eye Institute, Hyderabad, India.
Centre for Ocular Regeneration (CORE), L V Prasad Eye Institute, Hyderabad, India.
Curr Eye Res. 2022 Aug;47(8):1144-1148. doi: 10.1080/02713683.2022.2052107. Epub 2022 Mar 28.
To analyze the histopathological changes in eyelash following electroepilation using radiofrequency (RF) cautery.
RF current was applied to the eyelash root in human eyelids (from exenteration or eyelid shortening procedures) at a pre-determined depth of 3 mm excision a-priori, and processed for routine histology. Studied parameters were the extent of necrosis, involvement of the eyelash bulb, and type of bulb damage (partial or whole necrosis). Also, seven patients of chronic cicatrizing conjunctivitis with trichiasis ( = 4) and distichiasis ( = 3) underwent electroepilation using the above RF protocol.
Twelve eyelid specimens of seven patients (mean age 40 years; five upper eyelid and seven lower eyelid) were evaluated histologically. Majority of specimens (92%) showed coagulative necrosis in the eyelash bulb, follicle, orbicularis oculi, adjacent nerves, and blood vessels. The mean depth of necrosis was 2.12 ± 0.63 mm. Of 12, eleven eyelash bulbs showed necrotic changes with only partial bulb involvement in 55% of eyelids. The horizontal extent of coagulative necrosis was not uniform across the lash track, and the majority showed a wider area of damage in the lower segment. Of seven, all patients with trichiasis (4/4) showed no recurrence of lash misdirection whereas 66% of distichiasis patients (2/3) showed recurrent lash growth with one sitting of electroepilation applied at 3 mm.
Electroepilation guided by RF current produces variable necrotic changes in the eyelash root, leaving portions of intact bulbs in half of the eyelids.
分析射频（RF）电灼电解睫毛后的组织病理学变化。
在预先设定的 3mm 深度，将 RF 电流施加于人类眼睑（眼窝内容剜除术或眼睑缩短术）的睫毛根部，并进行常规组织学处理。研究的参数包括坏死的程度、睫毛球的受累情况以及球部损伤的类型（部分或全部坏死）。此外，7 例慢性增殖性结膜炎合并倒睫（ = 4）和双行睫（ = 3）的患者采用上述 RF 方案进行电解睫毛。
对 7 例患者的 12 个眼睑标本（平均年龄 40 岁；5 例上眼睑和 7 例下眼睑）进行了组织学评估。大多数标本（92%）显示睫毛球、毛囊、眼轮匝肌、邻近神经和血管的凝固性坏死。坏死的平均深度为 2.12±0.63mm。在 12 个睫毛球中，11 个出现了坏死性改变，仅 55%的眼睑出现了部分睫毛球受累。凝固性坏死的水平范围在睫毛轨道上并不均匀，大多数在下段显示出更广泛的损伤区域。在 7 例患者中，所有合并倒睫的患者（4/4）均未出现睫毛再错位，而 66%的双行睫患者（2/3）在一次电解睫毛治疗（施加 3mm）后出现睫毛再次生长。
RF 电流引导的电解睫毛可导致睫毛根部出现不同程度的坏死改变，使一半眼睑的部分睫毛球保持完整。
