Etude histo-pathologique de la chorio-retine des prematur�s

Calmettes, L; Déodati, F; P, Bec

doi:10.1007/bf00165432

Cited by 4 publications

(4 citation statements)

References 6 publications

(3 reference statements)

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“…Studies by methods other than ultrasonography have also yielded similar result. Calmettes et al found reduction in anterior chamber depth ranging between 0.1 to 0.5 mm with a mean of 0.23 mm with accommodation in their study using optical pachymetry [8]. Thus, the decrease in anterior chamber depth during accommodation as observed in our study is consistent with other studies carried put on this subject so far.…”

Section: Discussionsupporting

confidence: 92%

Ocular Biometric Study During Accommodation

Deshpande¹

2012

Int J Med Clin Res

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Abstract-We performed this study to measure the ocular changes during accommodation and see whether refractive error has any influence in effect of changes during accommodation. This study was carried out in the Department of Ophthalmology, Pt. B. D. Sharma PGIMS, Rohtak. Seventy five subjects were divided in three groups according to refractive status. Group A consisted of 25 emmetropes. Group B consisted of 25 myopes with myopia <5 D while Group C consisted of 25 hypermetropes with hypermetropia <5 D. The subject was asked to focus on 6/6 line of Snellen's chart kept at a distance of 6 meters with full refractive correction with the left eye and A-scan was performed on the right eye. Three readings of anterior chamber depth, lens thickness and axial length were taken and the mean values of these reading were calculated. Similar procedure was repeated after accommodation. Accommodation was achieved by asking the subject to focus on N/6 line of near vision chart held at a distance of 33 cm with left eye with full refractive correction on the left eye. Then, the subjects were asked to focus N/6 line of near vision chart held at 12.5 cm to increase the amplitude of accommodation and similar procedure was repeated. The mean increase in axial length was 0.051, 0.004, and 0.005 mm in Groups A, B and C respectively when focus of the left eye was shifted from 6 m to 33 cm. On further increasing the accommodation by shifting the focus of the left eye to 12.5 cm, the axial length increased by 0.08, 0.07, and 0.007 mm in Groups A, B, and C respectively. Increase in lens thickness and decrease in anterior chamber depth were also observed with accommodation in all three groups. There was no significant difference in between three groups in these changes. Conclusions: Subtle but statistically significant increase in axial length was observed with accommodation in this study. There was increase in lens thickness and decrease in anterior chamber depth with accommodation. There was no variation with refractive error in these changes.

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Section: Discussionsupporting

confidence: 92%

Ocular Biometric Study During Accommodation

Deshpande¹

2012

Int J Med Clin Res

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“…(Zeeman 1911, Raeder 1922 It has long been known that the lens thickness in older children and adults increases on accommodation, the depth of the anterior chamber simultaneously decreasing (Helmholtz 1855, Heine 1898, Saunte 1905, Zeeman 1911, Karpe 1938. Calmettes et al (1958) found on examining two 8 year-old boys that at maximum accommodation the depth of the anterior chamber decreased 0.38 mm and 0.20 mm, respectively, compared with measurements made under cycloplegia.…”

Section: Resultsmentioning

confidence: 99%

The Sagittal Growth of the Eye

Larsen

1971

Acta Ophthalmologica

107

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“…When the lacrimal sac is visualized (following dacryocystectomy), it often displays the pigmentation as well and in a striking fashion, with a strong black tone [114,153,154]. Reports of crystalline lens silver deposits have also been made [54,114,149,155]. In the posterior segment of the eye, silver accumulation is speculated about, following reports of retinal pigment epithelium changes, drusenoid deposits, and dark choroids in fluorescein angiogram, but a necessary causal relationship was not yet clearly established [111,[156][157][158].…”

Section: Pathophysiology Of Argyriamentioning

confidence: 99%

Clinical and Forensic Aspects of the Different Subtypes of Argyria

Mota

Dinis-Oliveira

2021

JCM

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Argyria encompasses the different cosmetic alterations that can develop if enough silver particles deposit in a specific tissue, typically in the skin, ranging from localized dark-blue macules to a generalized slate-gray/bluish tinge following systemic absorption. This work aims to fully review the state of the art regarding pathophysiology, diagnosis, treatment, and relevant clinical and forensic features of argyria. Argyria has been diagnosed in a wide range of ages, both sexes and varied ethnicities, with no known individual predisposing factors. Ultraviolet radiation with subsequence increases of melanin production aggravates the discoloration due to a reduction in the silver deposits. Physical examination and silver exposure in the anamnesis can be highly suggestive of the diagnosis, but a histopathological analysis with Energy-Dispersive X-ray Spectroscopy is required to unequivocally determine the discoloration etiology. Safe and effective treatment has only been accomplished with laser techniques, though only a few cases have been reported and with limited follow-up time. In conclusion, argyria typically has an occupational or iatrogenic etiology. It should be suspected when a patient presents with typical skin or eye lesions. A seemingly viable treatment modality, with laser technology, is finally within the horizon.

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Etude histo-pathologique de la chorio-retine des prematur�s

Cited by 4 publications

References 6 publications

Ocular Biometric Study During Accommodation

Ocular Biometric Study During Accommodation

The Sagittal Growth of the Eye

Clinical and Forensic Aspects of the Different Subtypes of Argyria

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