Sains Malaysiana 49(11)(2020): 2785-2791

http://dx.doi.org/10.17576/jsm-2020-4911-17

Eye Blinking Patterns, Corneal Staining and Compliance in a Group of Soft Contact Lens Wearers

(Corak Kerdipan Mata, Pewarnaan Kornea dan Komplians pada Satu Kumpulan Pemakai Kanta Sentuh)

BASHIRAH ISHAK¹*, NUR SAKINAH SAAD¹, LIM SIEW LEE¹, NORLAILA MAT DAUD¹, BARIAH MOHD ALI¹ & NORHANI MOHIDIN²

¹Optometry & Vision Sciences Programme, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, Wilayah Persekutuan, Malaysia

²School of Optometry, Universiti Teknologi MARA, 42300 Bandar Puncak Alam, Selangor Darul Ehsan, Malaysia

Received: 26 August 2019/Accepted: 17 May 2020

ABSTRACT

Many factors influence the success of contact lens wear, including lens surface moisture, which is affected by blinking. This study was conducted to determine the eye blinking patterns, corneal staining, and compliance in a group of soft contact lens (CL) wearers. Forty-one soft CL wearers and 41 age-matched control subjects (non-CL wearers) were recruited in this study. Blinking patterns were assessed with a digital camera attached to a slit lamp biomicroscope. Corneal staining was graded using Institute for Eye Research (IER) grading scale with 0.1 increments. The subject’s compliance level was determined using a questionnaire. There was no difference in eye blinking patterns between the CL wearers and control group (Mann-Whitney, p = 0.231). The average grades of corneal staining in CL wearers and control group were 0.38 ± 0.39 and 0.01 ± 0.08 unit, respectively. There was a significant difference in corneal staining between the two groups (Mann-Whitney, p = 0.021). A significant positive correlation was found between blinking patterns and corneal staining (Spearman ρ = 0.378, p = 0.015). Our results also showed that 63.4% of the CL wearers had good compliance towards lens care. In our multiple linear regression analysis, blinking patterns contributed significantly to corneal staining (B = 0.140, p = 0.015), while compliance level did not (B = -0.038, p = 0.471). Overall, eye blinking patterns in CL wearers influenced the risk of corneal staining.

Keywords: Blinking pattern; compliance; corneal staining; soft contact lens

ABSTRAK

Terdapat banyak faktor mempengaruhi kejayaan pemakaian kanta sentuh, termasuklah kelembapan permukaan kanta yang dipengaruhi oleh kerdipan mata. Kajian ini dijalankan untuk menentukan corak kerdipan mata, pewarnaan kornea dan komplians pada satu kumpulan pemakai kanta sentuh (KS). Empat puluh satu pemakai KS lembut dan 41 subjek kawalan (bukan pemakai KS) dengan umur yang sama direkrut untuk kajian ini. Corak kerdipan dinilai dengan kamera digital yang dilekatkan pada lampu celah biomikroskop. Pewarnaan kornea digred menggunakan skala penggredan Institute for Eye Research (IER) dengan kenaikan 0.1. Tahap komplians subjek ditentukan dengan menggunakan soal selidik. Didapati tiada perbezaan pada corak kerdipan mata antara pemakai KS dan kumpulan kawalan (Mann-Whitney, p = 0.231). Gred purata pewarnaan kornea pemakai KS dan kumpulan kawalan adalah 0.38 ± 0.39 dan 0.01 ± 0.08 unit. Terdapat perbezaan signifikan pada pewarnaan kornea antara kedua-dua kumpulan (Mann-Whitney, p = 0.021). Terdapat korelasi positif signifikan antara corak kerdipan dan pewarnaan kornea (Spearman ρ = 0.378, p = 0.015). Keputusan kajian juga menunjukkan 63.4% pemakai KS mempunyai komplians yang baik terhadap penjagaan kanta. Melalui analisis regresi linear berganda, didapati corak kerdipan mata menyumbang secara signifikan kepada pewarnaan kornea (B = 0.140, p = 0.015) manakala tahap komplians tidak (B = -0.038, p = 0.471).

Keseluruhannya, corak kerdipan mata pemakai KS mempengaruhi risiko terhadap pewarnaan kornea.

Kata kunci: Corak kerdipan; kanta sentuh lembut; komplians; pewarnaan kornea

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*Corresponding author; email: bashirah@ukm.edu.my