Evaluation of the effect of LASIK on axial length

JRCT ID: jRCTs052180173

Registered date:26/03/2019

Basic Information

• Recruitment status: Complete
• Health condition(s) or Problem(s) studied: moderate and high myopia
• Date of first enrollment: 21/10/2016
• Target sample size: 30
• Study type: Interventional
• Intervention(s): Laser in situ keratamileusis

Outcome(s)

• Primary Outcome: axial length
• Secondary Outcome: corrected distance visual acuity, refractive error change, contrast sensitivity, higher order aberration, etc.

Key inclusion & exclusion criteria

• Age minimum: >= 18age old
• Age maximum: <= 34age old
• Gender: Both

Include criteria

(1)both sexes by which the age is less than 34 years old more than 18 years old
(2)the person the degree of the nearsightedness is more than 2.5D and the equivalent spherical value- who is more than 3 D - less than 10 D (however the degree of astigmatism is 3.0D or less, anisometoropia is 2.0D or less)
(3)able-bodied person who doesn't possess an ocular disease besides the refraction abnormality
(4)the person who wears contact lens in both eyes and has a medical examination in ophthalmology periodically
(5)the person who can also understand a gist of this research with the one of the enough explanation and get consent in a document by one's own free will

Exclude criteria

(1)keratoconus
(2)keratoconus suspect
(3)active ocular outer inflammation
(4)cataract
(5)inflammation with uveitis and scleritis
(6)the whole body with a high possibility that I have an influence on a wound healing or immunodeficient disease such as serious case's diabetes and serious case's atopic disease
(7)during pregnancy or nursing lady
(8)additionally the study person in charge judges participation in this research to be unsuitable

Related Information

• Primary Sponsor: yamamura kiyoshi
• Secondary ID(s): UMIN000023081