Corneal Sensitivity After Cataract Extraction

Schirmer, K. E.; Mellor, L. D.

doi:10.1001/archopht.1961.01840020435019

Cited by 18 publications

(9 citation statements)

References 2 publications

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“…The mean C T T (and standard deviation) was found to be 30.8 mg/mme (14.22) in the morning. This value is somewhat higher than with the other group because it included a larger number of older subjects (Boberg-Ans 1955) as well as one aphakic patient (Schirmer & Mellor 1961 It is worth noting that after 8 and 12 h of wear of soft lenses there were wide variations among the subjects. Some subjects exhibited a large effect, others none at all.…”

Section: Effect Of Soft Contact Lensesmentioning

confidence: 74%

Effect of the Length of Wear of Contact Lenses on Corneal Sensitivity

Millodot

1976

Acta Ophthalmologica

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Corneal touch thresholds (CTT) were determined once in the morning before inserting contact lenses then after 4, 8 and 12 h of continuous wear. Two groups of subjects participated in this study; 12 persons wearing hard contact lenses and 15 wearing soft contact lenses. All subjects were perfectly adapted to their contact lenses and had worn them for not less than three months. It was found that hard contact lenses caused a progressive diminution of corneal sensitivity. After 12 h corneal sensitivity was, on average, 110% lower (that is an increase of the threshold) than in the morning. Soft lenses also caused a progressive reduction of corneal sensitivity which after 12 h wear was, on average, 45% lower than in the morning, although there were marked differences. Moreover, 9 of the hard contact lens subjects had been tested a year earlier and it was found that their CTT after 8 h wear had slightly but not significantly diminished which indicated that these subjects had not adapted significantly to their lenses in one year.

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Section: Effect Of Soft Contact Lensesmentioning

confidence: 74%

Effect of the Length of Wear of Contact Lenses on Corneal Sensitivity

Millodot

1976

Acta Ophthalmologica

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“…Some authors believe that it also helps ascertaining the prognosis. After cataract operations, various authors have tested corneal sensitivity (Schirmer and Mellor, 1961;Draeger, 1979;Peitcheva, 1980;Guillon and Morris, 1982;Holden et al, 1982). Similarly, tests have been made following retinal detachment surgery (Peitcheva, 1980;Binder and Riss, 1981;Gibson, 1981) and corneal graft operation (Zorab, 1971;Draeger, 1979;Ruben and Colebrook, 1979).…”

Section: Resultsmentioning

confidence: 99%

A Review of Research on the Sensitivity of the Cornea*

Millodot

1984

Ophthalmic Physiologic Optic

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“…Previous re searches have observed altered cell morpholo gy and lower cell density in the superficial epi thelial cells in clear corneal grafts [2,3], Nev ertheless, functional evaluation of the epithe lium on clear corneal grafts has been sparse Received: March 7,1994 Accepted: May 17, 1994 and focuses primarily on the early postopera tive stage [4]. More investigation on the func tional status of the corneal epithelium during recovery is thus warranted.Corneal hypesthesia has been observed in different corneal wounds, including cataract surgery, epikeratophakia and penetrating ker atoplasty [5][6][7][8][9], Since sensory denervation of the cornea results in a decreased mitotic activ ity, impaired epithelial healing process, and Dr. Shu-Wcn Chang …”

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confidence: 99%

The Epithelial Barrier Function in Clear Corneal Grafts

Chang

1994

Ophthalmic Res

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We conducted a corneal epithelial permeability study using a fluorophotometer on 93 eyes of 79 patients with clear corneal grafts. There were 45 males and 34 females, aged 61.6 ± 10.2 years. All eyes received penetrating keratoplasty at least 1 year (mean 40.4 ± 31.3 months) before examination. The normal fellow eyes of 65 subjects were examined as controls. The averaged corneal epithelial permeability of grafted corneas was significantly higher than that of controls (p < 0.001). In the 65 individuals having an otherwise healthy fellow eye, the grafted corneas were significantly more permeable than their control fellow eyes verified by paired t test (n = 65, p = 0.006). Concomitant corneal sensitivity test revealed a significantly hypesthetic cornea. These results show that in spite of a clinically normal clear graft, there is usually a subnormal epithelial barrier function and reinnervation, even years after comeal transplantation.

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Corneal Sensitivity After Cataract Extraction

Cited by 18 publications

References 2 publications

Effect of the Length of Wear of Contact Lenses on Corneal Sensitivity

Effect of the Length of Wear of Contact Lenses on Corneal Sensitivity

A Review of Research on the Sensitivity of the Cornea*

The Epithelial Barrier Function in Clear Corneal Grafts

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