Acute clouding of trifocal lens during implantation: a case report
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Intraoperative IOLs clouding of several kinds of hydrophilic acrylic intraocular lenses (IOLs) have been reported due to temperature changes. This phenomenon reported previously occurred in cold countries and during the winter months. However, no clinical case was reported about trifocal IOL opacification during operation. We report a case in which acute opacification of the optical region occurred simultaneously when AT LISA tri 839mp(Carl Zeiss) was implanted into the eye.
A 79-year-old woman with a cortex and nucleus cataract was scheduled to undergo right eye phacoemulsification assisted by femtosecond technique. The trifocal lens (AT LISA tri 839mp), which is made of hydrophilic acrylic (25%) with hydrophobic surface properties, was chosen for implantation. As the IOL was implanted into the eye, it became cloudy immediately. Then it was replaced by another AT LISA tri 839mp, which was transferred from lens company outside, the same phenomenon was observed. These two lenses underwent the same temperature fluctuation from cold outside to operating room. Finally, a ZCB00 (Allergan) was implanted.
The acute intraoperative clouding of trifocal lens(AT LISA tri 839mp) results from fluctuation of temperature should be noticed.
KeywordsAT LISA tri 839mp Opacification Cloudy
Logarithm of Mininal Angle Resolution
The major hydrophilic acrylic intraocular lenses(IOLs) that have been reported on regarding postoperative opacification include Hydroview (Bausch& Lomb), SC60B-OUV (Medical Developmental Research, Inc.), ACRL-60 (Ophthalmed, LLC), Memory Lens (Ciba Vision), AquaSense (Ophthalmic Innovations International, Inc.), and Akreos Adapt AO (Bausch & Lomb) [1, 2, 3, 4, 5, 6]. Delayed opacification of IOLs is known as pseudocataract [7, 8]. Intraoperative acute clouding of acrylic hydrophilic IOLs has been reported . There have been no reports of intraoperative acute clouding with the AT LISA tri 839mp.
To meet patient expectations of high-quality postoperative vision, including distant, medium, and near vision, a 79-year-old woman with a cortex and nucleus cataract was scheduled to undergo right eye phacoemulsification assisted by femtosecond laser technique with a + 18.5diopter trifocal IOL(AT LISA tri 839mp, Carl Zeiss)implantation. Her preoperative best-corrected visual acuity was logMAR 0.3.
To meet the ever increasing demand of vision quality, more and more high-end IOLs were applied in refractive cataract surgery. AT LISA tri 839mp, as a kind of trifocal IOLs, could provide distant, medium, and near vision.
Femtosecond laser technology has the ability to facilitate and optimize manual portions of cataract surgery [10, 11, 12]. Zhang S  reported that inflammatory cytokines IL-1β, IL-6, and PGE2 significantly increased after femtosecond laser-assisted cataract surgery. However, to the best of our knowledge, there was no report about IOL opacification caused by femtosecond laser and correlative inflammatory cytokines.
Different from the lenses (hydrophilic acrylic) that were previously reported to become cloudy in vivo, AT LISA tri 839mp IOL is made up of hydrophilic acrylic (25%) with hydrophobic surface properties. As Yu AK reported, the pseudocataracts occurred spontaneously due to calcium and phosphate accumulation, which resulted in hydroxyapatite crystal formation . The surface of this trifocal IOL is made of hydrophobic acrylic, and the opacification appeared immediately after implantation, which may not cause any chemical, mechanical, or geometric change to the IOL polymer.
Similar to the report by Pallavi Tyagi , the IOL we used was delivered to the theater (about 20 °C) shortly before the procedure from the store located outside the premises. The outdoor temperature was about −3 °C. The IOL had been in the theater for only15 min before implantation into the eye. The opaqueness in Pallavi Tyagi’s report lasted for about 3 h then cleared, and the opacification reported by Sezer Helvacı  disappeared by the following day. The first AT LISA tri 839mp remained cloudy without alleviation for about 1 h,then moved out. The second one became opacified again as soon as the optical region implanted into the eye. However,5 min after the second IOL was moved out, it became clear. The two IOLs underwent the same temperature changes. Moreover, the manufacturer’s manual mentioned that opacification can occur due to a change in temperature. We deduced that the change of temperature caused the opacification of AT LISA tri 839mp in this report.
The acute intraoperative clouding of trifocal lens (AT LISA tri 839mp) was caused by fluctuation of temperature in a short time. Therefore, we suggest that the IOL’s temperature should be kept in normal range as manufacture’s guideline requested (2–45 °C) before implantation. This may avoid IOL acute clouding caused by abrupt change of temperature (less than 2 °C to anterior chamber temperature) during implantation especially during winter season in the countries in temperate or polar zone.
Availability of data and materials
The datasets during and/or analyzed during the current study available from the corresponding author on reasonable request.
ZSH made contributions to conception of the manuscript, revising it, and performing the surgery. LQ made contributions to design of the manuscript, acquisition, analysis and interpretation of data, and drafted the manuscript. WXG,CWF made substantial contributions to acquisition, analysis and interpretation of data. JYD made contributions to revising the manuscript critically for important intellectual content. All of the authors have revised the manuscript. All authors read and approved the final manuscript.
Ethics approval and consent to participate
The study was approved by the ethics committee of Shanxi Eye Hospital.
Consent for publication
Written informed consent was obtained from the patient for publication of this case report and any accompanying images.Copies of the written consent are available for review by the Editor of this journal.
The authors declare that they have no competing interests.
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