METHOD FOR CALCULATING KERATOTOMY IN CASES OF LOW AND MODERATE DEGREE MYOPIA

FIELD: medicine. SUBSTANCE: method involves measuring subjective refraction using optopatterns at 5 m distance (Rc) and accommodation in relative rest state on laser glass under artificial illumination at 1 m distance (Rl). The condition of Ra=Rc being satisfied, accommodation apparatus is considere...

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Bibliographic Details
Main Authors IVASHINA A.I, SHELUDCHENKO V.M, MACHEKHIN V.A
Format Patent
LanguageEnglish
Published 20.12.1999
Edition6
Subjects
BANDAGES, DRESSINGS OR ABSORBENT PADS
DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS
FILTERS IMPLANTABLE INTO BLOOD VESSELS
FIRST-AID KITS
FOMENTATION
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES
PROSTHESES
TREATMENT OR PROTECTION OF EYES OR EARS
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Summary:FIELD: medicine. SUBSTANCE: method involves measuring subjective refraction using optopatterns at 5 m distance (Rc) and accommodation in relative rest state on laser glass under artificial illumination at 1 m distance (Rl). The condition of Ra=Rc being satisfied, accommodation apparatus is considered to be in normal state, the received subjective refraction value is used for calculating keratotomy. Rc > Rl being satisfied, accommodation tonus is considered to be below norm and Rc is used for calculating operation parameters. Rc <Rl being the case, accommodation spasm is observed and operation is to be postponed until accommodation apparatus comes to normal state. EFFECT: high accuracy in calculating operation parameters; excluded undesirable side effects of accommodation stress. 6 dwg
Bibliography:Application Number: RU19970108152