Corneal hypoesthesia

Martin, Xavier; Safran, Avinoam B.

doi:10.1016/0039-6257(88)90070-7

Cited by 102 publications

(52 citation statements)

References 95 publications

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“…neuropathies, congenital abnormalities) conditions may also cause corneal hypoesthesia. 9 The 1980 report 12 showing good correlation of esthesiometry and DR stage described only 37 patients. Despite showing good differentiation between groups at the ends of the DR severity spectrum (NoDR and PDR), the author did not make considerations on patients in intermediate positions.…”

Section: Discussionmentioning

confidence: 99%

“…For that reason the predictive val- The methods of measuring corneal esthesiometry and staging DR were chosen based on the availability in the Brazilian public health system. 10 For corneal esthesiometry the Cochet-Bonnet esthesiometer is considered the standard method 9 and aside from being the most used instrument for that purpose is also an easy to handle device.…”

Section: Discussionmentioning

confidence: 99%

“…Per eye analysis could also have caused a reverberation effect. The fact that both eyes are under the same systemic conditions (glycemia, disease duration, use of hypoglycemic drugs, insulin dose, and so on) and the fact that those uncontrolled conditions are very related to corneal hypoesthesia 2,4,9,17 indicates that both eyes could not be considered independent statistical units.…”

Section: Discussionmentioning

confidence: 99%

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Usefulness of corneal esthesiometry for screening diabetic retinopathy

et al. 2003

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OBJECTIVE: To assess the usefulness of corneal esthesiometry for screening diabetic retinopathy. METHODS: A cross-sectional study was carried out comprising 575 patients attending a diabetic retinopathy-screening program in the city of São Paulo. Corneal esthesiometry was assessed with the Cochet-Bonnet esthesiometer. The presence of diabetic retinopathy was detected with indirect fundoscopy. The validity of corneal esthesiometry in identifying diabetic retinopathy was evaluated by the Receiver Operating Characteristic (ROC) curve. RESULTS: Sensitivity and specificity analyses of the corneal esthesiometry for detecting the stages of diabetic retinopathy using different cut-offs showed values less than 80%. The best indices (72.2% sensitivity and 57.4% specificity) were obtained for the identification of patients with proliferative diabetic retinopathy. CONCLUSIONS: In the study series, corneal esthesiometry was not a good indicator of diabetic retinopathy.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Usefulness of corneal esthesiometry for screening diabetic retinopathy

et al. 2003

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“…Millodot found that subjects with blue irides exhibited significantly more sensitive corneas than subjects with brown irides, and that sensitivity is lower in nonwhite subjects with darker pigmented eyes compared with whites with darker pigmented eyes. [81][82][83] In a more recent study comparing LASIK-induced dry eye symptoms between Asians and Caucasians, corneal sensation at 3 and 6 months post-LASIK decreased more in Asians compared with whites. 80 If Asians have innately lower corneal sensitivity, then why do Asians report more dryness and discomfort during contact lens wear?…”

Section: Symptomatology: Dryness and Discomfort With Contact Lens Wearmentioning

confidence: 99%

Accounting for Ethnicity-Related Differences in Ocular Surface Integrity as a Step Toward Understanding Contact Lens Discomfort

Chan

Svitova

Lin³

2017

Eye &Amp; Contact Lens: Science &Amp; Clinical Practice

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Contact lens discomfort is a common problem that can lead to unsuccessful or limited contact lens wear. Although many factors may contribute to contact lens discomfort, limited research has explored the influence of ethnicity-related differences in the anatomy and physiology of the ocular surface. Therefore, we performed a search of the literature in PubMed using key words related to “ocular surface” paired with the terms “race” and “ethnicity.” The goal of this review was to determine potential areas of research regarding ethnicity differences, particularly between Asian and non-Asian eyes, in ocular surface integrity to advance our understanding of contact lens discomfort.

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“…The cornea is one of the regions of the human body that has the highest amount of naked nerve endings and, therefore, has a high level of pain sensitivity. The sensory innervation of the cornea is essential in maintaining corneal integrity (9,10) . The touch sensitivity threshold of the cornea, particularly in the center, is rather low.…”

Section: Introductionmentioning

confidence: 99%

Analysis of corneal esthesia in patients undergoing photorefractive keratectomy

Neto¹,

Silva²,

Lui³

et al. 2015

Arquivos Brasileiros De Oftalmologia

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Purpose: To quantitatively analyze corneal esthesia in patients undergoing photorefractive keratectomy (PRK) surgery. Methods: Forty-five patients selected for PRK in one eye underwent corneal esthesia using a Cochet-Bonnet esthesiometer preoperatively and 30 and 90 days postoperatively. Patients with a refractive diopter error of 4 or greater received intraoperative 0.02% mitomycin C for 20 s. Results: Twenty-four (53.3%) of the 45 eyes received intraoperative 0.02% mitomycin. Decreased sensitivity was observed on postoperative day 30. By postoperative day 90, corneal esthesia had normalized but remained 14.9% lower than preoperative levels. In the mitomycin group, no recovery of corneal esthesia to normal sensitivity levels was observed. The mean esthesiometer level was 39.2 mm on postoperative day 90 (P<0.001). Conclusions:The results of the present study demonstrate recovery of corneal esthesia to normal levels at 90 days postoperatively in patients who did not receive mitomycin C. In patients administered mitomycin C, a 23.59% reduction in the corneal touch threshold was observed compared with preoperative levels indicating a failure of recovery to normal levels.

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Corneal hypoesthesia

Cited by 102 publications

References 95 publications

Usefulness of corneal esthesiometry for screening diabetic retinopathy

Usefulness of corneal esthesiometry for screening diabetic retinopathy

Accounting for Ethnicity-Related Differences in Ocular Surface Integrity as a Step Toward Understanding Contact Lens Discomfort

Analysis of corneal esthesia in patients undergoing photorefractive keratectomy

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