白内障手術 サトウ眼科クリニック
千葉・松戸駅西口徒歩4分
047-702-9822
休診日 / 木曜・土曜午後・日曜・祝日
初診受付 / 8:30 - 11:00
診療受付 / 8:30 - 11:30
047-702-9822
休診日 / 木曜・土曜午後・日曜・祝日
初診受付 / 8:30 - 11:00
診療受付 / 8:30 - 11:30
 PAGE TOP

English guidance

電話予約・お問い合わせ

The eight-chop technique was featured on the cover of the Journal of Cataract & Refractive Surgery (JCRS).

The JCRS journal is published by the American Society of Cataract and Refractive Surgery and the European Cataract and Refractive Society.

As of 2023, the eight-chop technique was listed as the most up-to-date cataract technique in the magazine, the eight-chop procedure graced the cover of the magazine.

Also as of July 2023, most high-profile article in the JCRS journal.

Research Achievements

5th generation phacoemulsification cataract surgery
"Eight-chop technique" and "Lance-chop technique"

EIGHT-CHOP TECHNIQUE

エイトチョップ法
Eight-Chop　Video

Safety-oriented advanced surgery

In 2002 This technique was developed by our Director, Tsuyoshi Sato.
It is a development of the prechop technique, which is technically the most difficult technique in cataract surgery, and involves dividing the lens nucleus into up to eight sections.
It was presented at the Ophthalmic Surgery Congress in 2009 and named the eight-chop technique.
In 2019, we also developed the Lance Chopper and completed the lance-chop technique, which was presented at the Japanese Society for Ophthalmic Surgery.

LANCE-CHOP TECHNIQUE

ランスチョップ法
Lance-Chop　Video

Safe surgery in difficult cases

It is used when the lens is hard and cannot be divided by the eight-chop technique.

  • It may also be used when the lens nucleus is not hard but the division of the lens nucleus is incomplete.
  • This technique is essential in refractory cases such as weak zonule, corneal opacity and small pupill.
  • It can be safely performed in most cases where other techniques are not possible.

DEVELOPMENTS OF EIGHT-CHOPPER

エイトチョッパーの開発
EIGHT-CHOPPER
A: Eight-chopper I
B: Eight-chopper II
C: Lance-chopper
Sustainer:AE-2530

  • Eight-chopper I

    The prechopper, which divides the lens nucleus into four sections, was unsuitable for operation in narrow sacs due to its large tip when performing multiple sections, so the length of the tip was reduced (3.2 mm, width 1.4 mm) and the leading edge was made sharper.
    The operability has been improved and the lens nucleus can now be divided without difficulty.
    The effectiveness of surgery with the eight-chopper I was presented at the Ophthalmic Surgery Society in 2009.

  • Eight-chopper II

    The Eight-chopper II was developed by downsizing and sharpening the tip of the Eight-chopper I. The tip is 2.5 mm long and 0.8 mm wide, with a sharp leading edge. The tip is angled so that it can be inserted vertically into the lens nucleus. With the Eight-chopper II, the eight-chop technique can be used for harder lens nuclei in minimal incision cataract surgery with a corneal incision wound of 2.3 mm.
    The usefulness of the Eight-chopper II in minimal incision cataract surgery was presented at the Japanese Cataract Society in 2011.

  • Lance-chopper

    Used when the lens nucleus is very hard. Conventional universal prechoppers were difficult to insert and the long tip made operation difficult.
    The tip is 3.0 mm long and 1.3 mm wide, with a sharp leading edge. The short and sharp tip facilitates intraocular manipulation, makes it easier to penetrate the lens nucleus and the wide tip enables the fissure to be enlarged by pressing on the cross-section of the lens nucleus.
    The effectiveness of surgery with the Lance-chopper was presented at the Ophthalmic Surgery Society in 2019.

DOCTOR REFERRAL

医師紹介
TSUYOSHI SATO

TSUYOSHI SATO

M.D., Ph.D.
  • Member of Japanese Ophthalmological Society
  • Member of Japanese Society of Ophthalmic Surgery
  • Member of Japanese Society of Cataract and Refractive Surgery
  • Member of American Society of Cataract and Refractive Surgery
  • Member of European Society of Cataract and Refractive Surgery

Director Biography

The degree of Doctor of Medicine was awarded by Dr. Leo Esaki, President of the University of Tsukuba (Nobel Prize winner), after submitting a dissertation on the retinal circulation to the University of Tsukuba. During my study abroad period, I was also taught by Dr. Sayon Roy, Professor of Boston University School of Medicine, a world authority on diabetic retinopathy, and my paper was published in Diabetes, the premier medical journal in diabetes research. In addition, I was the first in the world to identify one of the pathogenesis of glaucoma caused by diabetes, and my paper was published in Investigative Ophtalmology & Visual Science, the premier medical journal in ophthalmology research.

History

Graduated from Tsukuba University

Obtained a medical license

Obtained a medical degree in ophthalmology

Received a medical degree (Doctor of Medicine)

Career History

Resident,Department of Ophthalmology, University of Tsukuba Hospital

Clinical and Research Instructor, Department of Ophthalmology, University of Tsukuba, School of Clinical Medicine

Research Fellow, Department of Ophthalmology, Boston University School of Medicine

Founding Director,Sato Eye Clinic




SATO EYE CLINIC
Youtube Channel

RESEARCH ACHIEVEMENTS

研究業績

【Pick Up 10】
エイトチョップ法は、アメリカ白内障屈折手術学会とヨーロッパ白内障屈折手術学会が発行する『Journal of Cataract & Refractive Surgery』2023年５月号に掲載されました。

Efficacy and safety of the eight-chop technique in phacoemulsification for patients with cataract

Sato, Tsuyoshi MD, PhD
Journal of Cataract & Refractive Surgery 49(5):p 479-484, May 2023.
| DOI: 10.1097/j.jcrs.0000000000001141
  1. 14

    Efficacy and Saftey of the Eight-Chop Technique in Phacoemulsification for White Cataract

    Sato, Tsuyoshi MD, PhD
    EC Ophthalmology. 2024 Jan;15(1): 01-10.
  2. 13

    Long-Term Effects of the Eight-Chop Technique in Phacoemulsification on Intraocular Pressure for Cataract Patients

    Sato, Tsuyoshi MD, PhD
    EC Ophthalmology. 2023 Dec;14(12): 01-11.
  3. 12

    Reply: Efficacy and safety of the eight-chop technique in phacoemulsification for patients with cataract

    Sato, Tsuyoshi MD, PhD
    Journal of Cataract & Refractive Surgery 49(10):p 1078-1079, October 2023.
    | DOI: 10.1097/j.jcrs.0000000000001259
  4. 11

    Effects Of The Eight-Chop Technique In Phacoemulsification On Intraocular Pressure In Patients With Primary Open-Angle Glaucoma And Controls

    Tsuyoshi Sato
    EC Ophthalmology. 2023 Aug;14(8):01-11.
  5. 09

    Downregulation of connexin 43 expression by high glucose reduces gap junction activity in microvascular endothelial cells.

    Sato T, Haimovici R, Kao R, Li AF, Roy S.
    Diabetes. 2002 May;51(5):1565-71. doi: 10.2337/diabetes.51.5.1565.
    PMID: 11978657
    この論文は以下の論文を含む60論文で引用されています。
  6. 08

    Effect of high glucose on fibronectin expression and cell proliferation in trabecular meshwork cells.

    Sato T, Roy S.
    Invest Ophthalmol Vis Sci. 2002 Jan;43(1):170-5.
    PMID: 11773028
    この論文は以下の論文を含む30論文で引用されています。
  7. 07

    Antisense oligonucleotides modulate high glucose-induced laminin overexpression and cell proliferation: a potential for therapeutic application in diabetic microangiopathy

    Sato T, Paryani G, Kao RS, Li AF, Roy S.
    Antisense Nucleic Acid Drug Dev. 2001 Dec;11(6):387-94. doi: 10.1089/108729001753411353.
    PMID: 11838640
  8. 06

    Short-term effect of beta-adrenoreceptor blocking agents on ocular blood flow.

    Sato T, Muto T, Ishibashi Y, Roy S.
    Curr Eye Res. 2001 Oct;23(4):298-306. doi: 10.1076/ceyr.23.4.298.5448.
    PMID: 11852432
  9. 05

    Increase in choroidal blood flow in rabbits with endothelin-1 induced transient complete obstruction of retinal vessels.

    T Sato, K Takei, T Nonoyama, T Miyauchi, K Goto, S Hommura
    Graefes Arch Clin Exp Ophthalmol. 1995 Jul;233(7):425-9. doi: 10.1007/BF00180946
    PMID: 7557507
  10. 04

    Downregulation of fibronectin overexpression reduces basement membrane thickening and vascular lesions in retinas of galactose-fed rats.

    Roy S, Sato T, Paryani G, Kao R.
    Diabetes. 2003 May;52(5):1229-34. doi: 10.2337/diabetes.52.5.1229.
    PMID: 12716757
  11. 03

    Role of vascular basement membrane components in diabetic microangiopathy.

    Roy S, Sato T.
    Drug News Perspect. 2000 Mar;13(2):91-8. doi: 10.1358/dnp.2000.13.2.858468.
    PMID: 12937635
  12. 02

    High glucose alters connexin 43 expression and gap junction intercellular communication activity in retinal pericytes.

    Li AF, Sato T, Haimovici R, Okamoto T, Roy S.
    Invest Ophthalmol Vis Sci. 2003 Dec;44(12):5376-82. doi: 10.1167/iovs.03-0360.
    PMID: 14638741
  13. 01

    Effect of combined antisense oligonucleotides against high-glucose- and diabetes-induced overexpression of extracellular matrix components and increased vascular permeability.

    Oshitari T, Polewski P, Chadda M, Li AF, Sato T, Roy S.
    Diabetes. 2006 Jan;55(1):86-92.
    PMID: 16380480

SURGERY RESULTS

手術実績
A.D. Cataract Vitrectomy +
Intravitreal Injection		 Total Cases
2002 902 24 944
2003 953 73 1,024
2004 931 89 1019
2005 856 95 954
2006 1,252 119 1,367
2007 1,153 72 1,225
2008 1,171 151 1,330
2009 1,025 206 1,217
2010 967 258 1,200
2011 1,002 226 1,208
2012 1,060 213 1,274
2013 977 369 1,350
2014 1,038 402 1,477
2015 845 532 1,369
2016 839 496 1,351
2017 695 510 1,219
2018 794 449 1,241
2019 717 375 1,110
2020 645 341 1,001
2021 641 379 1,051
2022 855 325 1,190
2023 773 369 1,160
Total 20,091 6,083 26,275
〒271-0077 千葉県松戸市根本 3-3
診療受付 / 8:30 - 11:30・初診受付 / 8:30 - 11:00
休診日 / 木曜・土曜午後・日曜・祝日
月 火 水 木 金 土
午前 ○ ○ ○ × ○ ○
午後 手術 手術 予約 × 手術 ×
  • 眼底検査後は４～５時間見えづらくなります。
    車の運転ができなくなりますので、車での来院はお控えください。
  • 駐車場をご利用の場合、クリニック周辺の有料駐車場をご利用ください。

アクセス

SATO EYE CLINIC ACCESS
JR常磐快速線・JR常磐緩行線・新京成線 松戸駅
松戸駅西口より 徒歩4分
047-702-9822 Google Maps
〒271-0077
千葉県松戸根本3-3
  • 水曜日の午後の予約に関して

    受診後の「予約専用」となります。初診の患者様は、午前中に受診頂くようお願い致します。
    ※初診の方は、検査時間がかかるため11時までの受付となります。

  • 午前の予約に関して

    「検査・処置」の場合に限りお時間のご指定が可能です。お電話にてお問合せください。
    ※予約があっても診察は受付順となるため、お時間がかかってしまう場合がございます。