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Early progression of myopia after LASIK in patients with family history of high myopia

Poster Details

First Author: K.Savic SERBIA

Co Author(s):    V. Suvajac   J. Suvajac   V. Novakovic   B. Djurovic           

Abstract Details

Purpose:

To present a series of cases of myopic patients with early myopia progression after LASIK due to increase in axial length.

Setting:

Eye clinic �â�€�žProfesional - Dr Suvajac�â�€�œ, Belgrade, Serbia

Methods:

Case series. Five myopic patients aged 21-24 y. presented in this paper underwent LASIK preparation exam which included thorough anamnestic data and reports of previous exams showing stable refraction up to 18 months prior. Tear film investigation did not suggest dry eye. Refraction/cycloplegic refraction was from -4.25 to -6.0D, with cylinder up to -1.75. Corneal tomography (Wavelight allegro oculyser) and anterior segment OCT (Optovue) revealed corneas suitable for LASIK intervention (keratometry values ranged (K1/K2) 42.5-43.8/,42.9-44.7, thinnest pachymetry 533-557�Â�µm, no additional risk factors). LAX ranged 24.45-25.86mm (Wavelight Allegro Biograph). Fundus findings were normal. All patients were college students.

Results:

Standard LASIK 6.5mm optical zone procedure was performed with MoriaM2 microkeratome and Allegretto Wavelight Eye-Q 400Hz for corneal ablation. During follow up,after 6-12months,these five patients showed the myopia progression from -0.75to-1.75D,sphere only.Immediate postoperative corneal tomography showed matching of the keratometry and pachymetry values to the size of myopia corrected relative to the pre-operative finding: K1 38.9-39.5,thinnest point 467-474�Â�µm,and remained stable during follow up period. Biometry revealed increase of axial length in all cases 24.63-26.24mm (raise of 0,22mm to 0,56mmavg. raise of 0,32mm). Three of these five cases had both parents achieving stable refraction between 25 and 30 yrs.of age.

Conclusions:

Literature suggests that refractive stability 6 to 12 months prior refractive surgery is mandatory and in most cases sufficient. However, there are cases that meet these requirements and still have an early progression as these presented. In cases of positive family history of high myopia patients in early to mid twenties, with high myopia should be warned about higher risk of early progression or followed up for more than 12 months preoperatively.

Financial Disclosure:

NONE

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