Custom Made Ocular Prosthesis at Optometry Clinic Universiti Kebangsaan Malaysia (UKM)

Mohidin, Norhani; Chia, Jho Yan; Saman, Mohd Norhafizun Mohd; Desai, N.C.

doi:10.17576/jskm-2013-1102-07

Cited by 3 publications

(8 citation statements)

References 13 publications

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“…This value is within the normal corneal diameter range of 11.24–12.76 mm. The corneal diameter measured in this study population also did not differ significantly from the value of 11.89 ± 0.36 mm reported by Mohd-Ali et al, 13 who investigated ocular dimensions in healthy young Malays. The corneal diameter was mostly found to be independent of age.…”

Section: Discussionsupporting

confidence: 51%

“…The mean CCT value in our study population was 552.11 ± 35.58 μm and was 94 μm thinner than the mean CCT value obtained from previous study on 188 young Malays aged 7–12 years old in Malaysia. 13 The CCT value obtained in our population was also 22 μm thicker than reported by Heidary et al, 25 who investigated the CCT in 54 healthy Malays aged 8–16 years old. However, subjects from both studies were not myopic and the CCT measurements were conducted using optical pachymetry and specular microscopy.…”

Section: Discussionsupporting

confidence: 43%

“…Limited literature discusses the corneal characteristics in young children especially in myopic Malay school children. Study by Mohd-Ali et al 13 found that the corneal curvature of the emmetropic young Malays aged between 7 and 12 years old is flatter than observed in young Chinese population and smaller corneal diameter than Caucasians. Indirectly, local forensic and maxillofacial studies have reported significant differences in the intercanthal and interpupillary distances 14 , 15 as well as in the periorbital tissue measurements 15 between local Malay and Chinese individuals, the largest two ethnic groups in Malaysia.…”

Section: Introductionmentioning

confidence: 93%

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Corneal Characteristics of Myopic Malay School Children and Their Association with Axial Length

Syed Mohd Dardin,

Mohd-Ali,

Mohamad Shahimin

et al. 2024

OPTO

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Introduction Corneal characteristics are unique to each eye and can vary among different levels of refractive errors. However, minimal data are available in the literature on corneal characteristics in myopic Malay school children including the difference between the low myopic group and the moderate myopic group. Therefore, this study aims to determine the corneal characteristics of myopic Malay school children and their associations with axial length. Methods A total of eighty-four data samples were extracted from forty-two myopic Malay school children. Measurements of the central corneal thickness (CCT), corneal curvature, corneal diameter, and axial length were measured using Lenstar LS900, a non-contact optical biometer. Data were later stratified by the spherical equivalent refraction (SER) into a low myopic group and a moderate myopic group, and paired t -test were employed to determine the differences in the corneal characteristics between these two groups. Univariate and multivariate linear regressions were performed to identify factors that are significantly associated with axial length. Results There was no significant difference in the CCT, corneal curvature and corneal diameter between the low myopic group and the moderate myopic group (t 82 =0.015, P =0.99), (t 82 =−0.802, P =0.43) and (t 82 =−0.575, P =0.57), respectively. Pearson univariate correlation analysis found that axial length significantly correlated with corneal curvature (r=−0.765, P <0.001) and corneal diameter (r=0.614, P <0.001) but no significant correlation found with CCT (r=0.046, P =0.68). Multiple regression analysis showed that axial length was significantly associated with a flatter corneal curvature ( P <0.001), older age ( P <0.001) and larger corneal diameter ( P =0.02). Conclusion This study reported the corneal characteristics in myopic Malay school children and its associations with axial length. Results of this study can serve as a reference value for the myopic Malay schoolchild population.

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Section: Discussionsupporting

confidence: 51%

Section: Discussionsupporting

confidence: 43%

Section: Introductionmentioning

confidence: 93%

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Corneal Characteristics of Myopic Malay School Children and Their Association with Axial Length

Syed Mohd Dardin,

Mohd-Ali,

Mohamad Shahimin

et al. 2024

OPTO

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“…In addition, cosmetic prosthesis replacement is important to prevent the collapse of orbital bony structures, which leads to facial deformity [10]. In humans, complaints due to discomfort concurrent with poor fit-prosthetic eyes have been reported [11]. Other clinical signs that could be found concurrently with oversized ocular prosthesis are mucoid discharge, swollen lids, hyperemic palpebral conjunctiva, entropion on the upper and lower lid with madarosis at the nasal portion of the lower eyelid [11], and rare conjunctival squamous cell carcinoma [12].…”

Section: Discussionmentioning

confidence: 99%

“…In humans, complaints due to discomfort concurrent with poor fit-prosthetic eyes have been reported [11]. Other clinical signs that could be found concurrently with oversized ocular prosthesis are mucoid discharge, swollen lids, hyperemic palpebral conjunctiva, entropion on the upper and lower lid with madarosis at the nasal portion of the lower eyelid [11], and rare conjunctival squamous cell carcinoma [12]. In addition, further complications such as loose prosthesis could be the cause of giant papillary conjunctivitis, blepharoconjunctivitis sicca [13], and granuloma formation in the eye [14].…”

Section: Discussionmentioning

confidence: 99%

Comparison of computed tomographic ocular biometry in brachycephalic and non-brachycephalic cats

et al. 2021

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Background and Aim: Ocular biometry has been used to evaluate ocular parameters; however, several factors need to be considered. In humans, age and sex have been shown to affect ocular biometry. The main factor that affects feline ocular biometry is the head circumference. At present, several reports have revealed that canine ocular biometry differs among dog breeds. However, there are no reports on normal ocular biometry in cats using computed tomography (CT). Therefore, this study aimed to explore feline ocular parameters between brachycephalic (B) and non-brachycephalic (NB) cats using CT and to evaluate the influence of age or sex of cats on ocular biometry. Materials and Methods: Twenty-four normal cats were divided into two groups: B (n=12) and NB (n=12). Each group had an equal number of designated males and females. CT was performed under mechanical restraint without general anesthesia and intravenous contrast enhancement. Ocular biometry, dimensions of the internal structure, including attenuation numbers and extra-ocular structures, were evaluated and compared. Results: B-cats had a significantly wider globe width (GW) than NB-cats (p<0.05). In addition, globe length (GL) and GW were significantly correlated with the age of the cats. Significant correlation between GL and age was observed in all cats (r=0.4867; p<0.05), NB-cats (r=0.8692; p<0.05), and B-cats (r=0.4367; p<0.05), whereas the correlation between GW and age was observed in B-cats only (r=0.7251; p<0.05). For extra-ocular structures, NB-cats had significantly greater orbital depth than B-cats (p<0.05), and orbital diameter was significantly correlated with age in all cats and B-cats (p<0.05). Conclusion: CT can be used for ocular biometric evaluation in cats with different skull types. GW was wider in B-cats, whereas the orbital depth was greater in NB-cats. Moreover, GW, GL, and orbital diameter were affected by the age of the cats. This information will be useful for further ocular diagnosis and treatment, especially in prosthetic surgical procedures.

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Modified Impression Technique of a Custom Made Hand Painted Iris For an Ocular Prosthesis: A Case Report

Mohamed,

Azahari

2023

MJMHS

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The enucleation of the eye due to variety of causes such as trauma, tumor and severe eye disease or infection has resulted to permanent defect of sight and aesthetic. Defects of the eye may include removal of a part of or the entire orbit which has affected patient’s psychology. Restoring the defect with pre-fabricated or custom-made ocular prosthesis will restore aesthetics and improves patient’s social confidence. This is a case report of construction a custom-made; hand painted iris of ocular prosthesis on a patient with missing left eye due to trauma using modified impression method. The case describes the process of constructing the custom-made ocular prosthesis with modification of impression technique to improve accuracy and fitting. It is aim to highlight the importance of custom-made prosthesis as compared to pre-fabricated ocular prosthesis on its property, fitting to eye socket, hygiene and aesthetic satisfaction.

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Custom Made Ocular Prosthesis at Optometry Clinic Universiti Kebangsaan Malaysia (UKM)

Abstract: Patients who lost their eyes as results of accidents or diseases (e.g. retinoblastoma)

Cited by 3 publications

References 13 publications

Corneal Characteristics of Myopic Malay School Children and Their Association with Axial Length

Corneal Characteristics of Myopic Malay School Children and Their Association with Axial Length

Comparison of computed tomographic ocular biometry in brachycephalic and non-brachycephalic cats

Modified Impression Technique of a Custom Made Hand Painted Iris For an Ocular Prosthesis: A Case Report

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