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A case of proliferative diabetic retinopathy in which scintillating particles appeared in the intravitreal cavity after laser photocoagulation.

Abstract To report a case of proliferative diabetic retinopathy (PDR) exhibiting the appearance of scintillating particles presumed to be crystallin inside the intravitreal cavity after laser photocoagulation.
PMID
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Authors

Mayor MeshTerms
Keywords

Crystallin

Laser photocoagulation

Posterior vitreous gel

Proliferative diabetic retinopathy

Scintillating particl

Journal Title bmc ophthalmology
Publication Year Start




PMID- 29258460
OWN - NLM
STAT- MEDLINE
DCOM- 20180105
LR  - 20180105
IS  - 1471-2415 (Electronic)
IS  - 1471-2415 (Linking)
VI  - 17
IP  - 1
DP  - 2017 Dec 19
TI  - A case of proliferative diabetic retinopathy in which scintillating particles
      appeared in the intravitreal cavity after laser photocoagulation.
PG  - 254
LID - 10.1186/s12886-017-0654-5 [doi]
AB  - BACKGROUND: To report a case of proliferative diabetic retinopathy (PDR)
      exhibiting the appearance of scintillating particles presumed to be crystallin
      inside the intravitreal cavity after laser photocoagulation. CASE PRESENTATION: A
      56-year-old male patient presented at our outpatient clinic after becoming aware 
      of decreased vision in his right eye. Ocular examination performed at the
      patient's initial visit revealed a massive preretinal macular hemorrhage due to
      PDR in his right eye. Fundus fluorescein angiography revealed extensive retinal
      non-perfusion areas and neovascularization in both eyes. However, no opacity was 
      observed in the intravitreal cavity of his left eye. Vitreous surgery was
      performed on the patient's right eye after ultrasonic phacoemulsification
      aspiration and intraocular lens implantation. Post surgery, the corrected VA in
      that eye improved from 0.1 to 1.0. In correlation with the treatment performed on
      the patient's right eye, we began panretinal photocoagulation on his left eye.
      Examination performed prior to the patient's third session of panretinal
      photocoagulation revealed a large number of scintillating particles in the
      posterior vitreous gel in front of the retina. Examination via slit-lamp
      microscopy revealed that the particles were of varied hues, and closely resembled
      a 'Christmas tree' cataract. No posterior vitreous detachment was observed, and
      since these particles were situated as if captured in the posterior vitreous gel,
      no eye-movement-associated mobility of the particles was observed. Since the
      cloudiness was not severe enough to interfere with photocoagulation, additional
      photocoagulation was performed, and the patient is currently under observation.
      Six months have now passed since the fourth photocoagulation procedure was
      performed, and there has been no change in the state of the particles. Optical
      coherence tomography imaging revealed no change before and after the panretinal
      photocoagulation. The corrected VA in his left eye has remained at 1.0 during the
      postoperative follow-up period. CONCLUSIONS: We speculate that the production of 
      crystallin in the retina in this case was triggered by the photocoagulation
      procedure performed for diabetic retinopathy.
FAU - Kohmoto, Ryohsuke
AU  - Kohmoto R
AD  - Department of Ophthalmology, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki 
      City, Osaka, 569-8686, Japan.
FAU - Kobayashi, Takatoshi
AU  - Kobayashi T
AD  - Department of Ophthalmology, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki 
      City, Osaka, 569-8686, Japan.
FAU - Sato, Takaki
AU  - Sato T
AD  - Department of Ophthalmology, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki 
      City, Osaka, 569-8686, Japan.
FAU - Kimura, Daisaku
AU  - Kimura D
AD  - Department of Ophthalmology, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki 
      City, Osaka, 569-8686, Japan.
AD  - Department of Ophthalmology, Takatsuki Red Cross Hospital, Takatsuki-City, Osaka,
      Japan.
FAU - Fukumoto, Masanori
AU  - Fukumoto M
AD  - Department of Ophthalmology, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki 
      City, Osaka, 569-8686, Japan.
FAU - Tajiri, Kensuke
AU  - Tajiri K
AD  - Department of Ophthalmology, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki 
      City, Osaka, 569-8686, Japan.
FAU - Kida, Teruyo
AU  - Kida T
AD  - Department of Ophthalmology, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki 
      City, Osaka, 569-8686, Japan.
FAU - Ikeda, Tsunehiko
AU  - Ikeda T
AD  - Department of Ophthalmology, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki 
      City, Osaka, 569-8686, Japan. [email protected]
LA  - eng
PT  - Case Reports
PT  - Journal Article
DEP - 20171219
PL  - England
TA  - BMC Ophthalmol
JT  - BMC ophthalmology
JID - 100967802
RN  - 0 (Crystallins)
SB  - IM
MH  - Crystallins/*metabolism
MH  - Diabetic Retinopathy/*surgery
MH  - Humans
MH  - Laser Coagulation/*adverse effects
MH  - Male
MH  - Middle Aged
MH  - Vitreous Body/*pathology
PMC - PMC5735882
OTO - NOTNLM
OT  - Crystallin
OT  - Laser photocoagulation
OT  - Posterior vitreous gel
OT  - Proliferative diabetic retinopathy
OT  - Scintillating particl
EDAT- 2017/12/21 06:00
MHDA- 2018/01/06 06:00
CRDT- 2017/12/21 06:00
PHST- 2017/10/01 00:00 [received]
PHST- 2017/12/11 00:00 [accepted]
PHST- 2017/12/21 06:00 [entrez]
PHST- 2017/12/21 06:00 [pubmed]
PHST- 2018/01/06 06:00 [medline]
AID - 10.1186/s12886-017-0654-5 [doi]
AID - 10.1186/s12886-017-0654-5 [pii]
PST - epublish
SO  - BMC Ophthalmol. 2017 Dec 19;17(1):254. doi: 10.1186/s12886-017-0654-5.