A study on association between intraocular pressure and myopia

Joseph, Dini Sunny; Thampi, Bindu; Antony, J; Mohan, Ajith

doi:10.18203/2320-6012.ijrms20161786

Cited by 10 publications

(16 citation statements)

References 11 publications

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“…4,8 The positive correlation discovered between IOP and increasing degrees of myopia in the current study signifies that as the magnitude of myopia surged, intraocular pressure increased. This finding is similar to observations made in studies by Mathapathi 3,4,[8][9][10]12 Considering high IOP is the greatest important alterable risk influence for glaucoma, this result describes that gradual intensified relative risk of POAG increases with shifts in refractive rankings from hypermetropia to myopia. 4,9 It also explains the increased risk for glaucoma with high grade myopia, well-matched with more severe myopia being related with a greater likelihood of glaucoma.…”

Section: Discussionmentioning

confidence: 51%

“…3,4,10 It denotes that myopic refractive errors are an independent predictor of high IOP which is conceivably the ground for myopia being counted a risk determinant for primary open angle glaucoma. 3,7,8 It also bears basis for the increased pervasiveness of glaucoma among myopic eyes when set side by side with nonmyopic eyes. 4,8 The positive correlation discovered between IOP and increasing degrees of myopia in the current study signifies that as the magnitude of myopia surged, intraocular pressure increased.…”

Section: Discussionmentioning

confidence: 99%

“…3,7,8 It also bears basis for the increased pervasiveness of glaucoma among myopic eyes when set side by side with nonmyopic eyes. 4,8 The positive correlation discovered between IOP and increasing degrees of myopia in the current study signifies that as the magnitude of myopia surged, intraocular pressure increased. This finding is similar to observations made in studies by Mathapathi 3,4,[8][9][10]12 Considering high IOP is the greatest important alterable risk influence for glaucoma, this result describes that gradual intensified relative risk of POAG increases with shifts in refractive rankings from hypermetropia to myopia.…”

Section: Discussionmentioning

confidence: 99%

“…4,9 It also explains the increased risk for glaucoma with high grade myopia, well-matched with more severe myopia being related with a greater likelihood of glaucoma. 8,9 Myopia or short sightedness is that form of refractive error wherein parallel rays of light come to a focus in front of the sentient layer of the retina when the eye is at rest. The eye is thus relatively too oversized.…”

Section: Discussionmentioning

confidence: 99%

“…In these studies, myopia and hyperopia were associated with the risk of ocular hypertension, however, myopic eyes were more predisposed to higher IOPs than hyperopic or emmetropic eyes. [3][4][5][6][7][8] As a consequence, myopic refractive error is known to be an independent indicator of higher IOP non-glaucomatous eyes. 9 The increases in IOP with advancing levels of myopia buttress the hypothesis that the link between glaucoma and myopia might be pressure moderated.…”

Section: Introductionmentioning

confidence: 99%

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A comparative study of intraocular pressure in myopia and hyperopia among a Nigerian population just diagnosed with primary open angle glaucoma in Benin City

Osaiyuwu

Edokpa

2018

Int J Res Med Sci

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Background: Increasing evidence suggests that high myopia is salient in the pathologic process of POAG, and IOP (Primary Open Angle Glaucoma (POAG), and Intra-ocular Pressure (IOP)) remains the crucial risk factor for this condition. Still, some other studies have signified that glaucoma was diagnosed in myopes independent of IOP, suggesting that predisposition to glaucoma in myopes may not be dependent on mechanisms related to high pressures.The aim of this study was therefore to compare the intraocular pressure in myopes and hyperopes in a Nigerian population just diagnosed with POAG to ascertain if proclivity to glaucoma in myopes is mainly dependent on IOP. Methods: This research was conducted as a retrospective study in the Optometry/Ophthalmology Department at Stella Obasanjo Women and Children Hospital, Benin City, Nigeria. The sample consisted of cases seen between 2011 and 2013. A total of 166 eyes with glaucoma and refractive errors (80 (48.19%) with myopia, and 86 (51.81%) with hyperopia) with an age range of 10 to 85 years, were used for this study. Results: Newly diagnosed glaucomatous myopes had a significantly higher mean IOP than recently diagnosed hyperopes (unpaired t-test, p= 0.004). Also, a significant inverse correlation was obtained between refractive errors and intraocular pressure (Pearson correlation, r = -.245, p = 0.001) i.e. as refractive errors progressed deeply into more minus (myopic) regions, IOP increased. Conclusions: The relationship between glaucoma and myopia is pressure mediated. The ascending levels of intraocular pressure that occurred with increasing extents of myopia demonstrate that POAG evolves too soon in participants with high myopia than in hyperopia and accentuates the seriousness of glaucoma surveillance in the myopic population.

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Section: Discussionmentioning

confidence: 51%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A comparative study of intraocular pressure in myopia and hyperopia among a Nigerian population just diagnosed with primary open angle glaucoma in Benin City

Osaiyuwu

Edokpa

2018

Int J Res Med Sci

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Study of intraocular pressure and glaucoma risk in myopes and hypermetropes in middle aged adults

Gnanadurai¹,

Karunanidhi²,

Ramraj³

et al. 2019

Trop J Ophthalmol Otolaryngol

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Aim: To study the relationship between Intra ocular pressure and refractive errors (myopia and hypermetropia) and assess glaucoma risk in middle aged adults and compare with a normal emmetropic population of same age group. Materials and Methods: This is a prospective observational study of 150 patients between the age of 30-50 years attending ophthalmology outpatient department of SRM Medical College Hospital & Research Centre for a period of 6months. They were categorized into five groups as Emmetropia (+0.5D to-0.5D), Hypermetropia(>+0.5D), Low Myopia (-0.75D to<-3D), Moderate Myopia (-3D to-6D) and High Myopia (>-6D). Intraocular pressure will be measured with Goldmann applanation tonometer three times at one weekly interval and the average value will be taken. Results: The intra ocular pressure in moderate and high myopia was found to be higher compared to emmetropic, hypermetropic and low myopic patients which was statistically significant (P value-0.0001). In all the refractive error groups, the intra ocular pressure was higher in the 40-50 years age group compared to the 30-39 years age group. There was no statistically significant difference between Intra ocular pressure in the right eye and left eye and between the sexes in all the refractive error groups. Conclusion: The intra ocular pressure was higher in moderate and high myopia and in the 40-50 years age group. This confirms that intra ocular pressure increases with advancing age. Patients with moderate and high myopia have increased risk of developing Glaucoma. Therefore, it would be advisable to routinely check intra ocular pressure for myopes.

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Prevalence of Pathological Myopia and Its Association with Ocular Disorders

et al. 2022

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Introduction: Pathological myopia (PM) is defined as the presence of structural changes due to axial elongation in eyes with high myopia. Numerous vision-threatening conditions are known to be more prevalent in eyes with pathological myopia including retinal detachment, myopic retinoschisis, macular holes, choroidal neovascularization, and chorioretinal atrophy. These pathological changes often lead to progressive loss of vision. Present study was conducted to find out the burden of pathological myopia and its associated factors at a tertiary care centre. Materials and Methods: A hospital based cross sectional study was conducted including a sample size of 345 with at least -5.0 D spherical equivalent of myopia in both eyes. Each subject was interviewed followed by extensive ophthalmologic screening examination, including measurements of visual acuity and fundus examination by Direct & Indirect Ophthalmoscopy. Data was analysed using SPSS ver. 21.0 using appropriate statistical tests. Results: Prevalence of pathological myopia among myopia cases between 7 to 40 years old was 9%. Among 31 cases of pathological myopia, juvenile and youth onset was seen in 29% cases each while early adult onset was seen in 41.9% cases. Prevalence was more in females (12.4%) as compared to males (5.7%). Low visual acuity, high spherical/ cylindrical error and high intra-ocular pressure were significantly associated with pathological myopia. Mean axis length in both right and left eye was significantly more in cases with pathological myopia (p<0.05). Conclusion: Around one in ten myopia cases suffers from pathological myopia. Pathological myopia is more common in males especially during adulthood and is associated with poor visual acuity and axial elongation. Another important finding observed in present study was presence of raised intra-ocular pressure among high myopic cases which can be a risk factor for development of optic neuropathy.

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A study on association between intraocular pressure and myopia

Cited by 10 publications

References 11 publications

A comparative study of intraocular pressure in myopia and hyperopia among a Nigerian population just diagnosed with primary open angle glaucoma in Benin City

A comparative study of intraocular pressure in myopia and hyperopia among a Nigerian population just diagnosed with primary open angle glaucoma in Benin City

Study of intraocular pressure and glaucoma risk in myopes and hypermetropes in middle aged adults

Prevalence of Pathological Myopia and Its Association with Ocular Disorders

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