(19)
(11) EP 4 816 051 A1

(12)

(43) Date of publication:
07.10.2026 Bulletin 2026/41

(21) Application number: 24916932.7

(22) Date of filing: 25.12.2024
(51) International Patent Classification (IPC): 
A61N 1/36(2006.01)
(52) Cooperative Patent Classification (CPC):
A61N 2/006; A61N 2/02; A61N 1/36046; A61N 1/0456; A61N 1/40
(86) International application number:
PCT/JP2024/045921
(87) International publication number:
WO 2025/150430 (17.07.2025 Gazette 2025/29)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA
Designated Validation States:
GE KH MA MD TN

(30) Priority: 12.01.2024 JP 2024003229

(71) Applicants:
  • Rohto Pharmaceutical Co., Ltd.
    Osaka-shi, Osaka 544-8666 (JP)
  • Centre For Eye And Vision Research Limited
    New Territories Hong Kong (HK)

(72) Inventors:
  • TAKAI Yoshihiro
    Osaka-shi, Osaka 544-8666 (JP)
  • KUROGI Hikari
    Osaka-shi, Osaka 544-8666 (JP)
  • ISHII Tsuyoshi
    Osaka-shi, Osaka 544-8666 (JP)
  • THOMPSON Benjamin
    Pak Shek Kok, New Territories (HK)
  • TAN Wei Sheng Ken
    Pak Shek Kok, New Territories (HK)
  • PARK So Yun
    Pak Shek Kok, New Territories (HK)

(74) Representative: Mewburn Ellis LLP 
Aurora Building Counterslip
Bristol BS1 6BX
Bristol BS1 6BX (GB)

   


(54) METHOD FOR TREATING, IMPROVING, ALLEVIATING, OR PREVENTING DETERIORATION IN VISUAL FUNCTION DUE TO PRESBYOPIA