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Evaluation of Disk Halo Size after Implantation of a Collamer Lens with a Central Hole (ICL V4c)

Xun ChenDepartment of Ophthalmology, Eye and ENT Hospital of Fudan University, Shanghai, ChinaTian HanDepartment of Ophthalmology, Eye and ENT Hospital of Fudan University, Shanghai, ChinaFeng ZhaoDepartment of Ophthalmology, Eye and ENT Hospital of Fudan University, Shanghai, ChinaHuamao MiaoDepartment of Ophthalmology, Eye and ENT Hospital of Fudan University, Shanghai, ChinaXiaoying WangDepartment of Ophthalmology, Eye and ENT Hospital of Fudan University, Shanghai, ChinaXingtao ZhouDepartment of Ophthalmology, Eye and ENT Hospital of Fudan University, Shanghai, China

2019en

ABI

Annotatsiya

Purpose . To investigate disk halo size changes produced by a glare source after surgical insertion of an implantable collamer lens with a central hole (ICL V4c) for myopia correction. Methods . In this prospective study, disk halo size and pupillary light response with a vision monitor were measured preoperatively and at 1 week, 1 month, and 3 months postoperatively. Pupillary light response parameters included contraction amplitude, latency, duration, and velocity; dilation latency, duration, and velocity; and initial, maximum, minimum, and average pupil diameters. Results . Forty-two right eyes of 42 patients were enrolled. Postoperative uncorrected distance visual acuity was better than or equal to 20/20 in all eyes. Compared to preoperative values, disk halo size showed no significant difference at 1 week postoperatively (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:mrow><mml:mi>P</mml:mi><mml:mo>></mml:mo><mml:mn>0.05</mml:mn></mml:mrow></mml:math>) and then decreased significantly at 1 and 3 months postoperatively (both <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M2"><mml:mrow><mml:mi>P</mml:mi><mml:mo><</mml:mo><mml:mn>0.001</mml:mn></mml:mrow></mml:math>). Contraction amplitude and velocity, as well as dilation velocity, decreased significantly at all postoperative time points (all <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M3"><mml:mrow><mml:mi>P</mml:mi><mml:mo><</mml:mo><mml:mn>0.001</mml:mn></mml:mrow></mml:math>). Disk halo size at 3 months postoperatively was significantly correlated with initial ( r = 0.446, <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M4"><mml:mrow><mml:mi>P</mml:mi><mml:mo>=</mml:mo><mml:mn>0.003</mml:mn></mml:mrow></mml:math>), maximum ( r = 0.483, <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M5"><mml:mrow><mml:mi>P</mml:mi><mml:mo>=</mml:mo><mml:mn>0.001</mml:mn></mml:mrow></mml:math>), minimum ( r = 0.425, <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M6"><mml:mrow><mml:mi>P</mml:mi><mml:mo>=</mml:mo><mml:mn>0.005</mml:mn></mml:mrow></mml:math>), and average pupil diameters ( r = 0.474, <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M7"><mml:mrow><mml:mi>P</mml:mi><mml:mo>=</mml:mo><mml:mn>0.002</mml:mn></mml:mrow></mml:math>). Conclusions . After ICL V4c implantation, disk halo size was reduced in the short term. Patients with smaller pupil sizes during pupillary response to light experienced smaller halos after ICL V4c implantation.

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DOI: 10.1155/2019/7174913

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